Paid up letter not supp****

Firstly after submitting my cancellation, I was continued to be billed for a line I did not and could use as I moved house. Then after settling debt later with Telkom's appointed debt collector just out of pure frustration with the harassment. Telkom still went ahead and blacklisted me for the incorrect amount. I have requested a paid up letter on the 21st of Septemeber, it was stated that the request would be relayed to the billings department and should not take more than 5 working days. To date I have not received anything or any communication. So my ITC rating is effected because of the lack of service and work ethic at Telkom towards their customers or ex-customer now.