Telkom unjustly blacklisting clients that they owe money and not wanting to resolve when proven guilty

Telkom blacklisted me for an account that was not in arreas... turns out they owed me money... emails and twitter dms later they decide to deposit money into my account without me agreeing to such and without me providing them with my bank details. When I ask them to resolve the credit bureau issue, they go silent. Now I am getting high interest rates on anything I apply for and they all refer to the Telkom Listing and the fact that my account is in arrears and has been in arrears when the truth is they do not want to resolve it. This is tiring.