Who I have the same questioned this topic

We do not have cell service in our home, this has been going on for some time. We do not have a landline/home phone.  We have tried wifi calling, that does not work. If I can not get some results I will be forced to go to another provider.  I was with AT&T and my phone worked fine in our home, so what is the difference now?  I have been to the store several times, and chated online a few times trying to get this resolved. Please help!!!!!