Telkom cancelation nightmare

I have moved house to a new address. I canceled my service for my landline and adsl on the 25 may 2018. It is now november and i am still paying for the service. How can i pay for something i do not have. I have called the call center numerous times to try and resolve the matter. To no success. I have been to the stores in the mall they say they can not help me. I really do not know what to do.