Telkom drives me to the edge by refusing to stop billing me, and simply cancel my services.

I have, repeatedly, via calls to the Telkom Call Centre, and by emailing the email address given to me (and verified on subsequent calls to the Call Centre), tried since November 2021 to cancel my DSL line, BECAUSE and ONLY BECAUSE Telkom refused to move my line to my new house, approx. 1,5 km and only a few streets from my old residence. Telkom have not cancelled my service and continue to send me monthly bills, Calls to the Call Centre, and repeated emails are having absolutely no effect. Do I have to do something drastic and risk getting arrested before this madness will end?