I had Internet service in Colorado, FWIW. (Not sure why I can't find any of their locations searching Yelp from the Detroit area.) I had a protracted conversation with the salesman who came to my door, who assured me at least 4 or 5 separate times that none of the equipment Quantum was giving me ever needed to be returned. I asked so many times because I didn't believe him when he said nothing had to be returned, under any circumstances. Lo and behold, when I ended my service months later, I started getting emails from Quantum about having to return their "pods". Customer service simply told me that the salesman was lying to me. So, I'll have to return the pods when I can, but in my situation, not having planned for that, that will take a few months. They'll ding me with a $200 charge for the equipment, which I can eventually get back when I return the equipment, but I'm frustrated that they weren't more forthcoming about things. They provided decent internet, but I probably wouldn't go with their service again. read more

THE WORST. I promise you they will cancel the scheduled appointment the day of with a lame excuse. I promise the internet service will be very slow and buffer even when you purchase the 2 GB plan for $100 a month. I promise you will not get the speed you are paying for from Quantum. I promise there will be many multiple day outages. !!!!!!!!!!! I promise that your bill will not be adjusted or corrected for no service. I promise you will REGRET selecting Quantum for internet service. I promise customer service will be inferior to your lowest expectations. It does not get worse than this for an internet company. I am in Orlando and luckily I was able to fire Quantum and move to Spectrum which has been a pleasure in comparison. I read hundreds of reviews on Yelp, after the fact, that mirrors the exact experience I endured. DO NOT SELECT QUANTUM IF YOU VALUE ACTUALLY HAVING USEABLE INTERNET. read more

Absolute worst customer service! Nine tech visits and over a month of no internet. They told me once all issues were resolved they would be issuing a credit. No credit. I called and they will offer a $30 credit for my troubles! Avoid!!! Service is good when it works. Good luck with technicians! read more

I had Centurylink which became Quantum Fiber and expected the 950 Mbps service I was paying for, but consistently got speeds closer to 50 Mbps. After multiple complaints, they finally sent a technician out -- only to tell me there was "nothing they could do" and blamed my equipment. The problem? The equipment was actually old CenturyLink equipment that Quantum inherited after acquiring CenturyLink. Even more frustrating, a Quantum representative who came door-to-door promised the equipment would be replaced when the technician visited. I finally cancelled and switched to Xfinity. Now I'm paying $10 less per month, getting free Peacock included, and consistently seeing over 1 Gbps speeds with no issues. Very disappointing experience with Quantum Fiber -- poor troubleshooting, finger-pointing, and no accountability. read more

Our fiber network went out we assume by a wire being cut. We called it in and got an appointment scheduled for Friday September 4; 5 days from the call. We took off work to make sure we were available for the appointment as was required by the company. The day before and throughout that day we received text messages they were looking forward to help us out and fixing the problem. The appointment was set from anytime between 12-4 to which we then find out at 3:30pm the appointment was rescheduled with no notification to us or approval from us to Sunday September 6 again from 12-4. We switched our schedules once again to make sure we were here for the appointment; at 1:20 we got a text they were on their way. Finally at 3:20 we get a message the tech had arrived but a minute later we got a text that the appointment was canceled. We had a hard time getting ahold of customer service to which they then could not give us an answer to why the tech had canceled there were no notes or notifications. All they did was reschedule us once again with no way to guarantee they would actually be there or an exact time we could expect someone to show up. We have tried numerous times to get ahold of a live agent whether by phone or on the chat and every time it says we are transferred we have no response. read more

Was great at first, but guessing the ATT purchase destroyed customer service, throttled speeds and is now charging me on 4/13 $479 for their crap $39 routers that I sent back and they confirmed receipt on 4/3. They couldn't even find them even after I proved confirmed delivery. Final straw was outtage and then service appointment 5 days out.... For those of us work from home this is a hard no. So yeah... avoid at all costs. read more

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I had an extremely frustrating experience with Quantum Fiber that felt both misleading and completely unacceptable from a service standpoint. I was originally on a stable 500 Mbps plan, but after experiencing ongoing connectivity issues, I was told the solution was to upgrade to 1 Gig. This conveniently removed me from my original "lifelong" pricing plan, which already felt questionable. It came across less like a fix and more like a forced upsell. What's worse is that the upgrade didn't solve anything. My internet performance did not improve at all. In fact, it got significantly worse. I ended up completely without internet for two full days. When I reached out for support, the earliest technician appointment they could offer was several days out. For a service as essential as internet, especially for people working from home, that kind of delay is unacceptable. read more

WHERE YOU LIVE MATTERS. If you live in a OK area, or not so good area/neighborhood, you will have major issues. I haven't been a customer a year yet, and my service has been out way way to often. Weeks at a time, no discounts to the bill. Why do I have this service? IDK. BUT IM DEFINITELY CANCELING. What's the point? I never have service. read more

Absolute trash! Worst customer service and a SCAM!! Everything was great up until installation day where they claimed they were on the way (they weren't) then they claimed they were there working behind the scenes (they weren't!) then after the third call to customer service trying to figure out what was going on they said MY INSTALLATION WAS CANCELLED! lmao what do you mean cancelled you just told me for the last hours you were working behind the scenes read more

Quntam fiber is horrible, with the new equipment they just put in to replace the old its even worse, no parental controls or acsess of any kind through the app except....to pay the bill imagin that. Should have stayed with TDS Fiber. Wat better service for sure. Step it up Quntam! read more

Stay away!!! Struggling to stay connected every single day for 2 months now. Never had any problems with any other company out there. AT&T and quantum fiber together are the worst. Go with tmobile!!! They have way better services and better price read more

I purchased a new home 30 days ago and have been trying to get internet service installed since the day we closed. Since then, I have had a total of seven installation appointments scheduled. On the day of every appointment, I receive a text message stating that the technician is running late. However, after waiting and receiving no updates, I end up calling customer service only to find out that the appointment has actually been canceled. At no point am I proactively notified of the cancellation. I work from home, and after a month without internet service, this has become a significant issue. Despite multiple escalations and countless hours spent on the phone, I continue to experience the same outcome over and over again with no resolution in sight. To make matters worse, I am constantly being contacted by AT&T representatives trying to sell me cell phone bundling options. I have no interest in switching carriers. At this point, I can't even get the internet service installed that I'm already trying to purchase. I'm simply asking for a reliable installation appointment, clear communication, and a resolution to an issue that should have been addressed weeks ago. read more

Waited two weeks for service to be activated and installed all for it to get disconnected and called a month and three days later after usage because they decided to switch from century link to At&t. Plus the technician did not mark the activation as complete. How the heck is that my fault? Horrible customer service on the phone by the supervisor named Daisy. Now I have to wait over a week for a technician. read more

If you're considering Century Link / Quantum Fiber because you're mad at Xfinity/Comcast (or for ANY reason at all), DON'T DO IT! I didn't think anything could be worse than Xfinity but Quantum proved me wrong! "Customer service" is atrocious and basically non-existent. I purchased a condo that is pre-wired with a Century Link (Quantum Fiber) modem, so I figured I'd give it a try because I was so excited to tell Xfinity to pound sand. Well, first, I was given no instructions for set-up. I didn't know if I needed my mesh routers or not. The speeds were extremely slow and all devices were lagging, so I hooked up my Linksys routers thinking that was the missing link. Not so much. Speeds were still extremely slow and I now had 4 wireless networks (2.4 and 5g from Century Link and the main and guest networks from the routers). I tried to call "customer service" to see if I had it set up correctly and if I needed to disable the Century Link networks so they weren't all competing, but they were extremely unhelpful. They didn't understand me, I didn't understand them. So I just tried to disable the Century Link networks and that made things worse. So I enabled them again. Speeds were under 100 for both uploads and downloads and phones didn't even work at all (we had to switch to cellular to get phones to work). I finally made an appointment for a tech to come out. She arrived armed with a new modem (because the one that was here had to be at least 7 years old, if not more). However, there was an issue on Century Link / Quantum's end and she was unable to replace the modem. She took the new modem with her, left the old modem hanging on the wall by the cords, and I now had NO INTERNET at all!! I had to make 3 different attempts to chat with "customer service" (because you can't actually CALL them on a Saturday, apparently) and NOT ONE of them was helpful!! They just responded as if reading from a script (and I'm not even certain they were actual humans). I told them that they need to at least get my slow internet back up and running because I work from home and need internet for my job. They didn't care... NOT ONE BIT! They told me the soonest they could get someone out would be 6 days later... 6 DAYS!!! I again explained that I at least had slow internet before the tech came out and killed it and that I need internet for work and again, they just gave me the same generic, scripted answer with no sense of urgency. I was forced to call comcast/xfinity to come out since they could get out here faster. I can say this, comcast/xfinity might be horrible to deal with but they have never left me without internet for an entire week!! The only time I was able to actually CALL someone was when I tried to cancel in the app (it MAKES you call a number)... and low and behold, that someone is in THIS COUNTRY! Quantum Fiber will not help you when you need help and couldn't care less that you need reliable internet to make a living. If I could give them negative stars, I absolutely would! And if you are thinking "eh, it will be fine, I'll just give it a try"... let me assure you that it will NOT be fine! If you have a reliable ISP, stick with them because this is not it! read more

The Internet service, tech support, and the added ATnT new lines are a joke. Spent more than 30 hours over 3-4 weeks dealing with the internet and ATnT cellular service failures. Had an impaired tech arrive at the house... drilled holes, left drywall on the floor, and left with no internet service. a few days of "trouble shooting" and more service staff coming and going. yet again, today, internet out and more service staff coming. The salesman for the ATnT cellular service failed to produce... left me hanging on "cellphone buyout," and I spent an inordinate amount of time on the phone and in the ATnT store to fix his failures. looking back, I would not do this again... they cannot keep the internet working and the ATnT business is a total joke... my first ever Yelp review... read more

We have been without service for 4 days now and have received 3 updates as to when we can expect service again. The 1st two updates were we would be back online in one day, then 3 days and now almost a week. I know numerous people in our community, including us, that work remotely. This has a huge impact to our livelihoo. I understand that some outages are out of their control but, to not have procedures in place to rectify ANY issue within 24 hours is absurd! This is also not even close to the 1st time that this has happened and not once have they adjusted our bill to remove the days that they did not actually provide their service to us. This is absolutely criminal to charge money for a service that is not actually provided. I never treat my customers in this manner. w strongly urge everyone to stay away from this company. I will be gladly moving on from them!!! read more

Century Link sold my service to them. It's been a nightmare! They can't answer the same question twice without a different answer. I've been without Internet for over 2 weeks and they don't know what's going on and century Link let me go. Zero do not recommend read more

Thet wull not help you on the phone. They wull not help you online. The tech installed a sagging, droopy line straight across my backyard. Blocking the entire airspace because, "this is how we do it." Now its low enough to have to duck under. No one cares. They are also now charging $25/month less and won't honor that price for existing customers. You have to cancrl and open a new acckunt. Google fiver can't come soon enough. FIND OTHER PROVIDERS! read more

After our CenturyLink service was down, we had to switch to Quantum service to get a service representative to our house and fix the issue. It took 2 weeks for them to fixed the problem and installed new hardware. The internet last about 6 hours before it went out again due to faulty modem. They are not able to come back to the house for an entire week. This is completely unacceptable! Both of us work from home and will be losing income. Their customer service is outsourced and was NOT helpful. A agent named Tashan #AD51684 insulted me by continuing giving me brush off answers and false phone numbers. He claimed that he was going to "Escalate"the situation which I believe is another attempt to get rid of me. read more

I went with quantum fiber in mid 2025. It was ok at first and I did the $65/ 1gig plan for Lifetime. It was good for a while and started noticing dropped internet always said insecure internet on my phone, most days. I called them 3 times yesterday. First call: Girl said she did not see any interruption in service. I told her several of the neighbors have the same issue. She was suppose to see if she could reset from office. Second call got the same representative, she apparently didn't even try to reset my service . And I told her it was still not working. Third call same representative, told her it still is not up and I need Internet to work even phone, not to mention everything else. She said we will have to send out a technician and I'm leaving a lot out now... she came back and said, tech. Is scheduled for June 26th. I said that 26 days from now, no way that is possible I can't be with out service for 26 days. She said well we can expedited service to tomorrow which is Saturday, May 30th, between 8-12. The catch is it has to be approved by a supervisor and not a guaranteed until saturday morning. Well I didn't get that appt. No call no yes we will be out today. I got my sms message, said appt is set for June 26th, between 8-12. One more call today Saturday May 30th 8:30 am this morning. Called to cancel, I told the guy on the phone I can't wait 26 days to have Internet in my home. Ya know this blew my mind!! He says your acct is to far away, we are unable to Service you, and the 26th is the earliest we can be out in your area. Wow, like that's stupid, that is what I told him besides saying, why would they put this in our area, if they were not planning to service on a normal service. Their information and web site even says we have great service for issues... do Not get this quantum's fiber. Customer service is horrible and also their service to come fix a problem, that was not caused by me, is impossible to get done in a timely manor, they apparently think we can be with out internet 26days Do not get quantum Fiber, horrible !! read more

The installer cut my neighbors line by mistake , leaving him without Internet for three days.. I made so many phone calls, trying to speak to someone in customer service at&T. Now they tell me they can't get someone out there for three days to fix their mistake.!! Everybody passes the buck and says it's not their department. Worst experience with and I've only been a customer for a few days. When they sign you up for service and take your credit card, they make it seem so flawless. Very frustrating when a communications company has the worst possible Customer Service... come on AT&T do better!! read more

No comment about the quality of the service... BUT a salesman knocked on my door last night at 8:30 PM when I was about to put my kids to bed. I told him to leave his info so I could contact him the next day. But he came back and knocked on my door 30 minutes later AT 9PM after I told him my kids were in bed, and his knocking made the dog bark and scared the crap out of my kids. I don't care how good your service is - if you treat families like that you can just buzz off. read more

Unethical company, stay away! If I could give them zero reviews I would. I return the equipment, have tracking information showed it was delivered to them, with a tracking number they provided. They charged me for unreturned equipment. Now, I have to fight to get this removed from my credit card read more

Quantum Fiber Services - Telecommunications Near Me - Rochester, New Hampshire

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Customer service poor. waited weeks for internet just to be told it can't be done which could have been avoided if installation instructions were detailed instead of "install our app and create an account". Cherry on top was the technician wearing his dirty shoes into my apartment cleaned the carpets just for him to dirty them. Absolutely terrible. read more

Horrible service and extremely unprofessional. I work from home and speeds are the slowest I've experienced. Additionally their techs call off and leave you without service knowing you are dependent on their service for work. My appointment was cancelled via a text at 6am , which is extremely unprofessional almd the. They reschedule another appointment for 10 days out on a Saturday that I have a funeral to attend. Representative Jason don't even offer or attempt to find another appointment time Disgusting and unprofessional! I have never been treated so poorly and will let everyone know of my experience with Quantum and after losing an immediate family member. read more

Horrible service! I have had Quantum fiber for 3 months because I am locked into their service through my apartment complex with no other provider in this area. They bought out CenturyLink and I have had problems with them the entire time. Three outages in 3 months and two of those outages have lasted a few days until I could get a technician here. Their technical support is an absolute joke! You get somebody from another country and they tell you to use a paperclip to push the reset button on the modem which sets it back to the factory settings. This makes the problem worse according to the technician that came to my home. They have to completely reset everything during the appointment. I have tried unplugging the modem for a minute or longer and that does not help. The only resolve is getting a technician here which is time off of work and extremely frustrating. If you are fortunate enough to have a choice of Internet providers for your service, do not choose AT&T Quantum fiber. They are horrible! read more

My internet went out, and after doing all the troubleshooting on my end with the customer help, I was told a technician had to come out, but the earliest appointment was over a week away. That is completely unacceptable, especially for someone like me who works from home and relies on internet access to do my job. I tried to escalate the issue to a supervisor or management to get an earlier appointment to get it fixed, but they refused to connect me with anyone higher up and told me "they would escalate it" but my appointment never changed. I contacted them 3 times. If the delay is due to a shortage of trained fiber technicians, then the company should not have expanded its services before having the proper support in place for the high demand. When I asked how to file a formal complaint, I was told to just tell the representative on the phone my complaint. There's no email address, no survey link, nothing that allows customers to formally submit feedback so the company can actually improve. Where does that complaint even go? It certainly doesn't feel like it leads to any real accountability. This experience has been beyond frustrating and unacceptable in today's world, where reliable internet is essential. I would rather pay more for a provider that actually delivers dependable service. read more

I have had Quantum Fiber Internet for 3 weeks. In that time I have had 1 tech come out to fix my internet. 10 minutes later it went down again. Everyday for 3 week I lose internet service 1-4 times a day. Having to unplug or factory reset my equipment. This morning 6/13/26 I lost service at 10am and tried to get it back up and running, but after 30 minutes I gave up and just left it unplugged and left my house. I returned home about 9pm and plugged it back in and still the green light is flashing. I did another factory reset and still no service. At this point they can come and get their crappy equipment, refund my money and I will seek service from someplace else. I highly recommend that everyone should stay far away from this company. Unfortunately I have to rate it with 1 star because this is the only option I have. But it is a total big fat ZERO too me. read more

They cut the Spectrum wire to my house when installing their fiber optic wires in my neighborhood. They damaged one of my neighbors sewer lines too. They then harassed me for weeks by soliciting at my door (in a no soliciting neighborhood) to try to get me to sign up for their services. read more

We were "migrating" Century Link customers Quantum Fiber inherited. They have shut off our service twice with basically impossible Asia based "customer service." We do not understand how an existing, functioning fiber optic line paid in full would be shut off arbitrarily twice. They have literally taken something working and broken it. We are working from hot spots from our phones until the Starlink equipment arrives. My wife's job depends on reliable internet. Notice also this is written during tax season, so downloads are a white knuckle affair. Keeping my phone on an ice pack so it doesn't overheat. read more

They start off good for the first couple of months and then they show their true colors. Quantum Fiber is nothing more than a cover front for con artists and fraudsters. I am paid up on my bill which is not due until today when I'm writing this review, but I do not have internet. Why you may ask? Because these con artists double billed me for a bill I already paid and shut my internet off in a clear attempt to extort a double payment. Not to mention their "customer service" consists of foreign scammers hiding in third world countries reading scripts because they don't speak or understand a word of English because they can't muster up a single brain cell between them. If you are looking for honest dependable internet service this is not the company for you. If you are one of their current victims, I strongly advice doing as I did and filing federal complaints with FCC and FTC. This con ring does not deserve to stay in operation and the only way to shut them down is for everyone to file reports against them. If Quantum Fiber confesses to their fraud and makes it right by me then I will consider amending my review. read more

Quantum fiber was one of the worst companies I've ever worked with. I have real estate in Vegas so I figured I'd give them a chance. WORST WIFI IVE EVER HAD. Started off on the cheapest option and constantly had signal drops and bad connection. I upgraded to the best plan they offer to still have horrible connection. Kelvin their supervisor was absolutely no help. I had multiple technicians come out and install useless signal boosters around my house. Service got worse. They came and removed them. Still bad. Called their company to cancel and got kelvin only for him to tell me theirs nothing he can do. Never get quantum if your in Vegas read more

Let's start with the sales pitch at ATT store promising a rate that will never change. That's false. Free pods for the whole house. That's fake. Let's then go to the installation subcontractor that refused to install through our attic. They wanted to drill a hole in the side of my house. We refused and canceled the installation. Then QF called us begging to try again. Told us that the install in attics all the time. Even gave me phone numbers to call if they refused a second time. Today the same subcontractor showed up and refused to install. I called QF as I was instructed and was told they don't install through the attic. My only option was to show them to do a hike in the side of my house (into my living room) and then run ugly wire along my ceiling into my office to get it to the modem/router location. Total disappointment from start to finish. read more

Internet goes out almost every day. They took over CenturyLink and turned the best Internet service I've ever had into the worst. Save your time and pay more for others. read more

Wow, I wish I would have checked out all the reviews on this provider. Clown shoes and customer service. Its all-automated emails...Thank you we suck; thanks for your money are what I hear. 22 Days after you take my money with a "We will be here next Tuesday for install.", turns in to "We can't give you an answer on that now, our technicians will be out as soon as possible (they had a van parked across the street when I came home yesterday for over a half hour...thought I had a spot of luck. NOPE!) I will update this review as I go so you may decide if this is the treatment that you are willing to accept... Edit: 34 days later, no contact. No solution. No communication. No service. EPIC FAIL. I did call customer service about 5 days ago to be told they have no information on when they will resolve whatever the problem might be...they don't even know what the problem is? I do. Nobody has come out to connect my service. Over 5 weeks now, still ZERO contact with any information on a connection date. Even the automated emails are slowing down...highly recommend finding another provider in your area, they clearly do not care about the customer side of service. 2/15 through 3/23. read more

Unreliable internet. I've had QuantumFiber a very short time and it has been constant outages. Seems that the merger might have some bumps but I'd rather go to xfinity than wait it out. Internet/DNS outage every week causing everyday users to just be without wifi. There are solutions for the DNS outage but it's not easily accessible for the average user. Check reddit for a solution. I have very slow speeds when I am paying for 1GB. My speeds are 64.1 Mbps download / 39.1 Mbps upload. I was told to just downgrade instead of getting a solution from customer service. Website is buggy and impossible to navigate. Customer service is useless. They don't actually track outages, you have to navigate to 3rd party sites. Good luck! I absolutely hate it. read more

Sales people in Bremerton are rude pushy, and will continue to come back to your house asking you the same question if you're interested in their service, they will not take no for an answer. They are so rude. They will show up at 9 PM knocking on your door trying to push their sales onto you. This is the same gentleman who is always coming through my neighborhood and I've told him no several times but obviously he doesn't get the memo and will continue to come to your home and harass you. Even if I was somewhat interested in getting this service, I wouldn't because of their rude pushy sales. I even made a complaint through their online customer service I talked to a human gave them all my information told them to put me on the do not solicit list and what do you know the next day they came back. Zero stars for them if I could. Absolutely 100% do not recommend. read more

Truly horrendous. My internet has gone out 5+ times so far this year. they take literally forever to fix anything. i have to wait DAYS to get anything fixed and then it breaks again 3 weeks later. i have spent so many hours on the phone with them i could vomit at the wasted time. read more

Horrible company. I was supposed to receive my equipment over a week ago and nothing! They have been charging me for service for two weeks already but I can't even use the service because they never shipped my router. I have called them twice and chatted online once to no avail. On my account my router still says "we're preparing your order for shipment"... but they are happy to charge me for service in the meantime. Every time you call, it sounds like you are connected to people in other countries working from their houses as half the time you can't hear them. read more

Had their internet for 2 years. Needed to move. Their slow, buggy website keeps telling me to use a portal that doesn't exist, then their customer service person tells me i have to cancel my plan (they keep the money for the whole month, even if you've only used a few days of it), and make a new account (which also doesn't work on their website). So lets see, slow, greedy, unhelpful. Oh and as soon as I set an end date to my contract my internet got throttled IMMEDIATELY. Even though they're still charging me for the higher speed!! Goodbye forever Quantum Fiber, you guys stink. read more