Unbelievably Terrible Service!

The client service I have received from cell c is appalling. I have tried to take over ownership of a contract from my mother. We submitted all the relevant documents and we were charged a fee for this. No change of ownership took place and only a change of bank account was done. The contract has come to an end and I have received data for this month that I am told I will be charged for despite us cancelling the contract in October. I have called the call centre a number of times and i am told i cannot be assisted as the contract is still in my mother's name but the monthly fee is going off my bank account. I sat down with Angelo at the V & A waterfront store and he said he will send my case to head office to be investigated but I will in the meantime keep getting charged. This is quite ridiculous. I asked Angelo to cancel the data I have been given this month as I will not be using it but he insists I will be charged for it. I WILL NEVER EVER DO BUSINESS WITH CELL C AGAIN. Terrible service all around!