Telkom keeps billing me for an unused service

Telkom has got to been the worst company i have interacted it with. I requested a cancellation of my ADSL internet subscription since January 2018 and even now in September 2018 it has not been done and I keep getting monthly bills for a service I haven't used throughout the year.

Customer service just promise to escalate and escalate but nothing gets done. The most recent reference number is ********** .

This is outrageous behavior from a service company, i feel i am being *********ed as if i stop paying for this service i get a bad credit score rating. I actually got reported for not paying bills for a service I had stopped using several months ago!! It's just crazy!