Worst service - Incoorectly billed

After complaining about being incorrectly billed Cell C never came back to me on the time that they had promised and they have been sending me email telling me my account is in arrears and all of this is after I cancelled my contract in august already. This Morning they deducted R3311.88 again from my bank account. I have had enough and I am taking you guys to the consumer rights court and consulting with the ombudments, This is totally unacceptable and the only thing you could tell me was that the person who cancelled my contract did not allocate the fees to the correct department???? I mean how? how the hell does that happen yet you claim to be the best network in the country??? I will see you guys in court.