1. TMT Communications

    1. TMT Communications

    0

    ONTARIO, CA

    TMT Communications

    4.0 (5 reviews)
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    3 years ago

    Helpful 17
    Thanks 8
    Love this 5
    Oh no 2

    3 years ago

    Savanna was very nice and helpful I was able to get a phone as mine had broken she is personable and just nice ! Thanks savanna

    Helpful 0
    Thanks 0
    Love this 1
    Oh no 0

    3 years ago

    Helpful 1
    Thanks 0
    Love this 1
    Oh no 0

    3 years ago

    Marc and Josh are the shit... great, fast and efficient service on the go I appreciated that.

    Helpful 1
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    Oh no 1

    3 years ago

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    Karin Langwasser

    Karin Langwasser

    (22 reviews)

    My husband and I have been using Langwasser and Company for nearly 20 years. They prepare our…read morebusiness and personal taxes, provide tax projections and handle our business payroll. The partners and their team are extremely professional, knowledgeable, responsive, efficient and treat us like family. They take the time to explain everything clearly, answer any questions we have and stay up to date with the latest tax laws. Their attention to detail and customer service truly sets them apart. After nearly two decades of outstanding service, we can confidently say they are the best in the business, and we recommend Langwasser & Co to all of our friends and family.

    Unfortunately, Karin provided the worst professional experience that I have had to date. I hired…read moreher two years ago to help with my business and personal taxes for self and entire family. I sent clients her way in that time period as well. Unfortunately, Karin doesn't take time to review all the information provided and leaves a lot for her staff to do. She ultimately doesn't see the big picture which creates issues in the long run. She has made several mistakes on my taxes that my financial advisor found, did not follow up on missing info, ignored information provided and made decisions that were quite unethical without discussing first which we did not agreed to. It seems like the only thing she cares about is making a buck with no regard for her customers. Outside of being unethical, not service oriented at all, her ego is so huge that you are not allowed to question her or she gets really testy and actually allows herself to raise her voice as well. Do not trust her with something as important as your financial well being and safety.

    Mariette Felicie Martinez, EA

    Mariette Felicie Martinez, EA

    (26 reviews)

    After relocating from Burbank to Rancho Cucamonga, my husband and I needed a new tax person. I…read moresearched Yelp and luckily found Mariette. My husband and I were able to submit all of our tax documents electronically. We visited Mariette's office once to sign the final documents. Mariette is a true professional, knowledgeable and courteous. She returned all of our phone calls and emails in a timely manner. My husband and I will work with her for years to come. I highly recommend her services!

    I had very high hopes, but in the end I was very disappointed. I was initially impressed with the…read moreemails and reminders that I received from Mariette about our upcoming meeting. She seemed very on-the-ball. When we talked on the phone, Mariette was professional, friendly, and knowledgeable about bookkeeping. However, I felt rushed in our telephone conversation. Telephone conversations are one price, whereas if you want to meet with her in her office she charges much more. The fist time that I had a bad experience with Mariette was when I had scheduled a telephone conversation with her weeks in advance. Then just before the meeting, she asked to reschedule. I'm busy too, but I understand if we have to reschedule. However, she is booked weeks in advance and to have to reschedule an appointment with Mariette can now take about a month from the first time that you wanted to talk to her. I then asked to be rescheduled to a different date and time that she suggested. I called her at the time we had scheduled and I didn't know that she had scheduled with someone else at that time. She said that I had asked for that time, but that she didn't confirm that appointment with me. She said that I had to request that appointment within a 72 hour window. I understand what she means, but she also didn't tell me that she couldn't make that appointment with me because she gave it to someone else. So here I am with an appointment in my calendar to discuss something with her that I wanted to tell her about a month ago and if I have to reschedule again then I have to wait another couple of weeks. Then she told me that she would call me, but never did. I actually think that Mariette is a victim of her own success. I'm sure that she's good. I'm sure that she knows what she is doing. But I'm also sure that she is too busy for me and inconsiderate of my time. I see how many 5 star reviews that Mariette has and I realize that this one star review goes completely against what others have written. But none of the other reviews are from a Yelp Elite member or with anyone with more than a handful of reviews. And I seldom give a one star review.

    TMT Communications - businessconsulting - Updated September 2026

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