Just let me cancel PLEASE!!!!

If I could give ZERO stars I would! Took out a mobile device contract with Telkom ages ago. Contract came to an end and 'got automatically renewed' for another two years. Didnt get a new device or anything like that - just kept on getting billed. That second two year contract came to an end and submitted a cancellation request. That has now not been processed and 3 months in I am still getting billed for a service I DO NOT WANT!!! Disputes links go to a 404 error on the site. Call Centre says they cant assist I need to email. Email just goes into a black-box where I get no replies. I honestly don't know how this absolute **** level of service is even allowed! I would honestly NEVER EVER EVER RECOMMEND Telkom to even my worst enemy after this experience!