City Of Tshwane Municipality
Sold my property but still paying levy???

We have sold a property more than a year and six months ago, on the completion of the sale our attorneys send a letter to the City to take our Levy bill off our name, but no luck, I have taken up so much of my time on phone calls emails waiting on the phone to be transferred with no luck, I still receive a bill in my name for somewhere I don't live, and the best part the new owner does not pay his levy, but what does this have to do with me?? except give me a bad credit rating. I am beyond fed up with this service transferring me from the one to the next, but no one seems to know what the procedure is so how am I suppose to know???