Still billed after cancellation

I called Cell C to enquire why i am now being billed 2 months after cancelling and porting my number to Telkom, this is after receiving a statement from Cell C. Their operator Ellen informed me that I should phone telkom to find out why I am being billed - not sure if Telkom are going to know why Cell C are billing me!!!!!! <br> No help from Ellen on reference number ***. Cell C called me about 4 times after cancelling so they knew I no longer required their service but yet they still bill me. Would apprecciate some assistance because I am going to reject your debit order and if there are any charges I will be claiming them from Cell C. Suggest some training for your operators so they can assist clients even if they have cancelled.