Appalling level of service

On Sunday the 11th September I called CellC to upgrade and was told that I couldn't because I am on debt review. No problem, I told them in that case I want to cancel the contract since its pointless paying for a contract when I cant get a device. Operator told me she would get someone to call me back. Saturday 17th Sept I called again since no one had called me all week. I get transferred to the cancellations department and they tell me they cant assist me because I cant verify my information. What Information exactly I ask her and she says she cant say someone will have to call me back. I think this is really terrible service from CellC. She cannot tell me if its a phone number or an address or what it is just keeps saying that I need to verify the information. I have been a CellC customer for over 15 years and its really sad to see how the level of service has dropped. I pay my account every single month and I understand that I cant upgrade but how can you possibly stop me from cancelling my contract. This is really *********! I am unhappy and appalled with your service and no longer want to be associated with CellC so can someone please contact me and help me cancel my contract?