I switched to T-Mobile from Verizon (worst decision ever). Since then I have been having a problem since June of 2017. When I am at work and school (in the Downtown Detroit area) my data does not work. So for over 8 hours a day I am unable to use over a thousand dollars worth of Apple equipment (iPhone and iPad) because of T-Mobile's subpar service. When I am at home my service works fine. When I call T-Mobile initially they had me troubleshooting my equipment and even cold transferred me to Apple Care when it is apparent, since no one that I work with who has T-Mobile can use their data while in this area, that it is the service and not the equipment. I was even told on more than one occasion by more than one T-Mobile agent that their is not enough T-Mobile tower coverage downtown and they get a lot of calls from customers in this area indicating they cannot use their service. I am so DISSATISFIED with my T-Mobile service. Anyone in my building and work area who has Verizon, Sprint, AT&T have no problems...only T-Mobile. Since I can use my phone for less than half the time I am paying for, I feel I should only pay half the bill so EVERY month I call for a credit. Today I spoke with an agent who was less than helpful who then transferred me to a "supervisor" (LOL) named Robby who claimed he is as high as I can escalate. He was TERRIBLE and indicated I would need to do a master reset and a warrant exchange on my equipment (both the iPad and iPhone) when it is apparent and proven that it is the service and not the equipment. He also basically said ... "you said you want to switch service so let me tell you how much you owe on your iPad..." Clearly they do not value their customer's service. every other telecommunication's company I have every dealt with have a winback or retention department but T-Mobile seems to think their customers don't matter. I am very disappointed that this is the type of service T-Mobile offers...and if Robby really is a supervisor...wow I need to run back to Verizon with the quickness. I advised him that I am a project manager with a major telecommunications company and a master reset and switch of equipment would not resolve a service problem that is related to tower coverage. I am shocked at the service that I have been getting and will continue to escalate and draw attention to T-Mobile's bad service until my issue is resolved . T-Mobile has not heard the last of me. I pay well over $100 a month and this is not the type of service that I expect.