Unable to cancel Telkom fixed line

I have tried on numerous occasions to cancel my Telkom fixed line. Initially I have compete the required form, and returned together with a copy of my ID to the ********** email address. Unfortunately my numerous emails were returned as the email address was not working at the time. I have contacted Telkom, and was advised to cancel the line on the online portal, which was done on my part. I was then called by Telkom retention department, and was informed that my ADSL ISP was not cancelled. I did confirm with my ADSL ISP and it was confirmed in writing that the service was indeed cancelled. I have tried again to request a cancellation from Telkom, but was once again told that the request cannot be processed as the ADSL ISP is not cancelled.

In the meantime I have moved out of the house over a month ago already, but still has to pay for a line for which I don't even have access to.