Telkom Billing Credit Bureau Update

I paid up my Telkom Data Account on the 4th January 2020 and it is still showing as owing on all the credit bureaus under my credit profile. I have spoken to over 6 Telkom agents who seem not to have a clue of what should be done to ensure Telkom Billing Department has updated my information on the credit bureaus. This is having a negative impact on my credit score.

4 different people including a manager have promised me a "paid letter" which until this day has not been sent. I went as far as going to the Forest Hill City Branch yesterday where the manager told me on duty that she will contact the billing department and this would be resolved within 24 hours. Nothing has happened!

This is the worst customer service I have received in the last decade, no one seems to know what to do, a month has passed and I still cannot make any bank finance applications due to this account's negative impact.