Desperate for assistant to terminate contract and correct billing call centre impossible to use.

HOW do one deal with Telkom - In July 2020 I moved from one premises to another I have tried to make contact with Telkom since May 2020 to give notice of termination when calling the call center you been put on hold by the electronic answering service for hours until your airtime was run out, when you try and mail the accounts decision its returns undeliverable. So I looked on the internet and use about 6 different e-mail address I could get hold of and send notice of termination. NO REPLY today I receive a call centre call informing me they are going to sue me I exspained that I have been trying to terminate to service I was told to phone 10210 or pay the consultant cant help me. I there customer service consultants still in Telkom that can evaluate data and assist one to terminate the service an make a corrective action some one that is not using a tick box system this can take month to get to court which I will definitely win the case in the mean time this effecting me credit score which I would like to resolve so anyone please let me know how you cancelled your telkom contract.