No response from Telkom for over 1 year

For more than one year, I have been trying to cancel my residential landline with Telkom. Following Telkom's instructions, I have submitted the required forms via email but have had no response, apart from the automated email response. This is after submitting the forms four times! I also visited their shop in Clarement, Cape Town where I was informed that they don't deal with cancellations and could not help me at all.

I have never experienced such poor customer service and strongly recommend that others DO NOT EVER subscribe to a Telkom service.

Telkom, if you are reading this, could you PLEASE respond to my request from July 2017 to cancel my landline?