Bad service and feedback

I called cell c last week regarding by laptop account that was expired after two years. They called me and ask if I want to upgrade I said no I don't want to go on with that amount. I want to cancel it. Then he said it's fine. They bill me again and they called it and ask why so much and I cancelled it. They said to me it is that amount because their is a cancellation fee. Then the end of May they bill me again. When I call in on 10 of June they tell me that the contract isn't canceled but she will help me and put me through cancellations department (fist time I knew that I must call cancellation department to stop the contract) Now they said I must pay until end of July the contract was done of end of April (after two years) I never agree to go on with that account. When I took the contract out they told met after two years I can get a upgrade or the that contract is done. I call in last week Wednesday the lady tell me they Will get back at me in 48 hours for feed back. On Wednesday 24 June I called in again and ask why no one came back to me and the she said there is no request on the system then I want to a manager but they are in a meting no one phone me bac