No response yet being charged by Telkom for a cancelled service

I have cancelled my Telkom service on Friday 20 December 2019, however I am still being billed for the service. The bill now at 21 July 2020 is R2 902.36 I do not received any response or feedback from Telkom and according to the email in December 2019, Telkom acknowledged receipt of my cancellation and request and I was advised that I would be contacted within two to seven days. This clearly has not happened as we are in the Winter of the following year????? Tuesday February 25, 2020 I sent another email to enquire about the cancellation of my landline - no response from Telkom.

Another email was sent by me on Monday June 15th of which Telkom has yet to respond! I have called into the Call Center and I have been advised that I need to sent an email????? In all of this, I am still being billed for the services that I am clearly not using and thus I have sent an email to cancel the service in December already????

I am very annoyed at the non-response from Telkom and yet they just continue billing!