Bad Credit Rating Because Of Telkom's Mistake!

Hi, last year there was some confusion with my account where I was receiving 2 bills for whatever reason. I paid into one and this was the wrong account - eventually this was resolved and corrected and the payments reflected into my existing account. Please note however that on a recent credit application, I was told that I was declined due to adverse ratings from Telkom. This is due to the above. Please resolve asap as it is not fair that my credit rating suffers due to a Telkom fault.