Request for a service to be cancelled by Telkom but Telkom unable to cancel their own services.

I requested the cancellation of my telkom account on 2018/06/28. I then received what I thought was a final account which I paid on the 30 July 2018. Thereafter I received no further accounts. I happily thought that the account was successfully cancelled until I suddenly receive notification for debt collectors that my account with Telkom is outstanding to an amount of R1482. I telephone Telkom to find out about the account and they indicate that the line was not cancelled. Their reason was that at the time there was an ADSL line attached which was provided by another service provider. The ADSL was also cancelled by me at the same time 2018/06/28. Their response is that I need to pay the outstanding balance for a service that thought was cancelled and not used by me before they can cancel the service. A big warning to all Telkom users, just because you request that a line be cancelled by Telkom does not mean they will do it. Furthermore just because you do not receive any accounts from Telkom does not mean that they are not billing you.