Update an post Discontinued Service

I was set up on a payment plan $40 a month I paid double $80 to stay in good standings with my account, today they canceled my service, said I wasn't on a payment plan couldn't get into my account because the card they have on file is one that I canceled the account months ago that they still go into the issues I have with my phone I can't connect to Wi-Fi.I so i couldn't go into my files to look for the card number for them they said they nothing they can do I have to go to a store wasn't able to drive 40 minutes to a store right now.I'm trying to take care of personal and business things, but I can't because my phone wasn't working at all.Legally, do not have to leave a card on file.Because they had a security breach and my information was leaked out in my account before. Then\nAnother agent got on the phone.And when I gave him a card number that I thought was the one it went through.\nThen they put me back on a payment plan which I was already on.And somehow my cake got upgraded to unlimited premium which I didn't do either.I'm trying to get my account down.And he said they charged me months in advance. So I canceled my second line in January, but they were still going to charge me until March