The worst service I have come across

I had a month to month LTE contract with telkom They started debiting amounts in excess to what they should of which I made them aware. One time they debited R3700 instead of R880, I then gave them a 1month's notice of cancelation. They brought the account in order and I then canceled my account In June 2020 To date they have failed to update the credit bureau of my paid up account status.

I have tried to get them to fix this matter as it keeps coming up when I request credit. With their accounts department that you can only talk to them over the phone, I have been bounced from one call center agent to the next. Telkom can you please resolve your mess with immediate effect