Worst ever service from Telkom - Most unprofessional service provider

I open ONE account and signed ONE contract with Telkom on the 26/05/2018 for a fibre line at a cost of R1008 per month for two years. The account no is ********** 67776. This account is fully paid up every month. Suddenly Telkom sends me a second bill with account no: ********** 71 with a TIN no: ********** . I have never requested for a additional line or TIN. At first, I have ignored this account because I hoped that Telkom will notice their mistake ,but that had not happened and the outstanding amount escalated to more than R10 000.00. Then I started to phone Telkom on a regular basis to try and sort out this problem they created. At first they immediately look into this TIN number and noticed that I have never used it. Secondly they immediately cancelled this account. Thirdly they reduce the amount to just over the R5000.00. Telkom were supposed to clear the account which they did not do and now I am struggling to get Telkom to do so. This mistake of Telkom is busy ruining my credibility. Details of steps taken to resolve the complaint: I phoned Telkom offices on the following dates – 17/4/2019, 18/4/2019 and on 24/4/2019 – Reference no.: ********** 9; 7/5/2019 Ref: ********** 1; 9/5/2019 Ref: ********** 9; 13/5/2019 and 15/5/2019 Ref: ********** 2; 20/5/2019 Ref: ********** 7; 13/6/2019 Ref: ********** 8; I did phone Telkom before this listed date, but lost the history on my phone due to a sim swop. Telkom is supposed to have all these dates on their system. Each time the consultant did look on the system and rep**** that they can see that the line was never used and that they will immediately correct it on the system. To this day, and after all the conversations I have had with the consultants as can be seen above, this matter have not been fixed and is now influencing my credit record.