Horrible service in the last couple months.

When I first signed up for AT&T it was becuase it was the only carrier that I could receive service in my home with. However, in the last couple months it has become the worst cell service I've ever had, I can't even receive or send text messages in my home. I've missed very important calls without even so much as a notification due to no signal. It's getting very very frustrating having to attempt to resend a single message sometimes up to 10 times. It's pretty ridiculus that I've been paying for this service and can't even use it to text, I had a phone 10 years ago that didn't even have trouble texting.