Telkom Bad Service

I initially wrote a review about at poor service received from Telkom in March of this year referring to an issue that start in August 2017, I wrote in detail on how I took out a data contract and cancelled it within a week due to now service coverage in my area, and after going back to the store and filling in a cancellation document Telkom still debited my bank account or 6 months in a row and only stopped after I posted a review. I received statement show a zero balance and assumed that that was the end of it. Little did I know....

About 2 months ago I get a call from an debt collection agency (NDC debt) a guy named G Maboa telling me that I have defaulted on my Telkom account and owe them around R1800. I emailed the cancellation document from last year to him, I never received an acknowledgement or even an apology from NDC nor Telkom on the error from their side, a week later I receive yet another statement reflecting a zero balance. I then find out when I visited my bank that I have a negative reflection on the credit bureau, I then contacted Telkom customer care on the 25/10/2018 (after going into the Telkom Branch at Mall of the South and was told by a staff member that there's nothing that can be done) I was promised I will receive a 'paid up letter' by a client services rep (Winnie) within 7 to 14 days. It is now 15/11/2018. still no letter received, I called Customer Care again and was told it will be escalated and will take 7 days. I once again have to suffer for Telkom's incompetence.