Unfair service

I had a vdsl account with Telkom and all was well and I was very happy with the service and I maintained my account well, it all went bad when they started *****ing the cable and a Telkom technician advised me that they will not replace the cable anymore and my account will be canceled and I should switch to fiber, now they keep billing me for a service they decided to cancel, I have disputed the the invoice with the contact center re : ***6 but nothing has been done yet

Regards Kgalid Petersen