Contract Cancellation and Continue to pay Loop - Poor Service.

Cell C is preventing people from exiting contract by blocking the opportunity to exiting the contract. I want to move to pay as you go but they do not cancel the contract. I tried to cancel the contract but that did not happen. They then debit you and you have to pay again and they then continuously debit your account. If you do not pay then they can easily send your details to the credit bureau, this is not fair. You phone the call center to cancel, they take your detail and they transfer you and you have top provide the detail again.