T-Mobile Lied about service Rapid City South Dakota

So I switched over to T-Mobile. The sales pitch was the best coverage, fastest LTE network, and brand new towers in the area. I looked at the price $100 for 4 lines and that was with taxes included for military. I made the switch and I upgraded an iPhone 6s to get the XR. I went home and had zero data coverage (keep in mind I live in the middle of the city). I thought it might have been my phone, but my daughter and wife were having the same issue. The next day my wife has zero signal at the elementary school she works at, both in the building and outside. My daughter has no data at the high school.

I call T-Mobile and they tell me “well you don’t have reception in that area”. I argued with them stating the salesman showed us a map and was bragging about how great their coverage is. So I asked for my money back, and they said no problem. I said what am I going to do about my phone, I need it back. They said they couldn’t give me my trade in phone because it was against their policy. So I said what am I going to about a phone. They said you can pay for the iPhone, but it needs to be paid in full otherwise they can’t unlock it. They said if I wanted the cash for the iPhone 6s they would only give me $36.

So basically I have no carrier now, and I have to pay to activate my phones again with my previous company (which will cost me at least $50 or more). Not to mention I don’t have a phone unless I pay $750 or take $36 for the old one. I called 3 representatives and each one said they couldn’t do anything else to remedy the situation. I can’t believe I let them dupe me into switching over. They totally ripped me off. They lied about their services and now I have to foot a bill to reactivate my phones and pay for another phone!