Telkom wont cancel your line EVER

Telkom do not cancel services. Our house was sold in July 2017 and to date Telkom can still not get the cancellation right. I am being billed monthly for a service that was cancelled online, telephonically, in store and on email...I have 12 reference numbers and every time I call to enquire, they just log another case. No joy from Bhekisisa Mvubu, Mantombi Tinga, Jacob in the call centre or the Greenstone Telkom store. to top it all off I just received a call from the Telkom sales team to enquire about my new line. WHAT THE HELL!! Any advise - No Telkom, unless you plan on using their service for eternity. Rather go Fibre and not with Telkom... PLEASE can anyone tell me how to cancel my adsl line and Telkom line. I do not know which way to turn. If one more person calls me to just log another case I thinkI will go crazy...