Over Telkom

In december 2018 I tried to cancel my telkom line , went on to their website and emailed the address given on their site, both emails were returned as unsuccessful, called their number on their website that was unavailable, i was leaving to go away so had to go into their store in January, went into their store and the man there said the cancellation functionality had been tken away and I had to download the app and cancel through the ap, I did so and received a refrence number , I then received an email thanking me for sgining up with Telkom, my next bill i received a penalty of around R5000 so I called their accounts department and they said it was for exiting the contract that I have never even renewed, I was given a refernce number for this call and was told it would take around five days nearly a month later still nothing so I called in again only to be told it has not been reviewed and they have to escalate the issue again, I am now receivng text messages saying my service has been suspended due to collection... a service I dont even have and that I cancelled three months ago already. I am now beyond annoyed what more can I do and the concern is the more people I talk to they experiancing the same problems.