Why is there mysteriously no longer signal in my house after T-Moblile/Sprint Merger?

I just spent over a half hour on the with someone I could hardly hear or understand. Was told it's a problem they know about and promise to fix but they don't know when. I was forced to sign with them and upgrade phone for 5G 2 months ago and am regretting it. I want my contract cancelled as I want to go to Verizon. This is stupid. I don't know how they get away with selling you a contract to provide service when they don't have service. I'm going to talk to Verizon tomorrow and look for a class action suit or who you complain to.