Bad service and response

I have a data contract with Telkom, this was initially on a debit order wich I cancelled and made payment via eft. The debit order was not cancelled as requested and now I have to pay penalties and interest. I have spoken to Zanelle which was very irritated with me, I requested that I get some proof that my account debit order was no longer active. She said the bank automatically cancelled it... I know debit orders run on a magtape and this issue will arise again, I requested to speak to a manager and she said she must check if he is available and then proceeded to just place me on hold indefinitely. Zanelle does not want to deal with the and public and help solve queries, she is not professional and had no interest in getting a supervisor to assist. Unfortunately we are in Brakpan otherwise Telkom would not have been my first choice. Telkom customer support sucks