Cancellation contract from cell c

I had a contact account from cell c of which I paid up and canceled it in January but last month when I was checking bank statement, still cell c is appealing on my back and they have been taking or debting money even though the account was closed and cell. When I called cell c. They told me I owe them money and but they will cancel again and they need more money to cancel contract. I been having different calls from they call center this one will say I owe R134, after two days another call R164, after 1 day R244, and today they called again now I owe R300. Am really disappointed with cell service because when they call me they will say all calls are recorded but I want those calls to review from the record I can't that information and when I ask questions to the call center they won't even answer one question but they want my money. This is making my score look bad, this making my name very bad. Worse part is they is no cell c store in durban all malls.am wondering what is going on with cell c. Are they taking our money and run away? Are they closing cell c and ensure my name is bad? What kind of company is this? And no one is willing to help me or to answer my question. They only thing I get from them is I owe them money. Worse this contract was paid up but they continued to take my money. So they should pay my money back.yoooo I really don't know what to do now. The service worse worse very bad. Yourl need to train ur people on how to **** us. I really need help. Hellopeter. This my number ***