Unable to cancel Telkom ADSL

On the 17th of March 2018 I contacted Telkom via Facebook, in order to cancel my ADSL. I have since phoned, gone into stores and mailed several people that offered to help. I have all the email correspondance from that day onwards. I have been paying via EFT Telkom every month since for a service not used. I still want to retain my phone line and email with them and stated that in all the documentation, I get a blatant ignore from Telkom. The call centre agents are unable to assist, emails bounce back to their service cancellation department and the Telkom stores cannot help? After being a loyal Telkom subscriber for almost 17 years, it is appalling how they completely disregard their clients requests. What is the use of all these shops, portals and emails if they cannot fulfil a simple task and pass the buck. Absolutely pathetic.