Telkom Billing

For two months I have been struggling to have my account updated by Telkom, and the people working at Telkom is incapable of handling this situation. I have spoken to all the branches and the billing department especially a person named Ricardo who works at the billing department promised me that the situation would be handled, but it has not been handled yet. My name is being made bad at the credit bereau due to their negligence and the Kenilworth branch giving me the wrong information. My account has not been updated on their side and I have paid my account. My report shows that I have not paid, which in fact I did pay.