My account was on errors

My account was on errors. I made arrangements paid everything last year November Which also I've been paying every month. According to me my account it up 2 date which it is Surprisingly today wen I call in to ask why I'm I not getting any calls nor why my car doesn't give out an accurate location wen ever I locate it. Was told that because last year was blacklisted hence m not getting a full service. What I disgrace is this im really disappointed because this is so new to my ears no one, ever told me another the 1800. Now I'm told that I need to pay it for my name to be cleared