Blacklisted by Telkom wrongfully and extremely unsatisfied service!!!!

Good Day, I requested on the 18th of April 2019 for a credit payment letter for B Reinecke. We app**** for an ADSL Line to be installed at her home more than a year ago and no one ever showed or came to do the installation. No bills nothing received. As i could also not be billed for something i don't have. Then when Mrs Reinecke started applying for a home lone, the amount of over R200 was against her name from Telkom without any explanation. When we called the billing department, I Spoke to Brenda and she said Mrs Reinecke was wrongfully billed. The letter we requested to clear her name will take up to 7 working days. It has been more than a month now and still no letter available. Due to Telkom the brokerage is also not getting any commission due to the face that there is something against her name! Up till now nothing, no letter, nothing. No one ever cares in calling back, but when Telkom has something to sell they are eager to call to try and get a sale! I called this morning and still no letter available and the system is offline. That doesn't surprise me at all. I am giving Telkom up till Friday to send me that letter via email or else further steps will be taken for wrongfully blacklisting my name.