Mismanagement of Telkom account

I have a contract with Telkom and I changed banks and informed them about this development and a call centre agent assured me that the banking details have been updated on the system. Since 3 months it's been back and forth my banking details of being told my banking details are unupdated on the system and they require me to make manual payments. Early this week I got an SMS of demand for an account I paid up to date manually yet again last week. When I called the call center they confirmed that my account is up to date and apologised for the inconvenience. Few minutes ago I just received a notification that my profile has been loaded on credit bureau.

This is totally unacceptable and an intentional dent of my credit profile.

Few