Has this happened to you?

I am having a horrendous experience getting my bill straightened out since October.  I am being charged monthly for "free" phones.  My bill should be $100. It is $136. I have spent hours trying to get it straight. I am more than ready to return to Verizon.  Entered under the $830 promotion, which was not credited. We were charged full price for the phones and received a pittance for our old phones.   No one is listening or responding.  I did get a response, albeit an incorrect one, from the local T-Mobile.  Engaged in a long chat with someone who could not speak English and another agent who simply gave me prosaic responses.  Nobody is listening.  I have no complaints about service, although I get no coverage in many areas. I WILL CANCEL BEFORE I PAY FOR A "free" PHONE!