Vodacom not handling complaints, but handing me over to attorneys an placing me on a credit bureau.

After receiving various calls from Vodacom, I called them and they said I must write to *** and explain my side of the problem. So I wrote to Vodacom on Monday, 27 January 2025. I followed up on 28 January 2025, and 30 January 2025. Then I included *** on 3 February 2025. All the time, Vodacom kept on calling about my account. I have been handed over to MDB who also called me since then on a daily base, and just hung up when I wanted to talk. I called back and complained at MDB as Vodacom's collections partner, with an email to '***' and again to *** on 12 February, all without even an answer. I still getting calls that MDB is just hanging up as soon as I answer. If Vodacom attended to my query, they would have noticed that they were at fault for not cancelling a contract on my instruction, but kept on billing me. I threatened with Hello Peter and still did not receive any response from Vodacom or MDB Incorporated. Hopefully, both MDB and Vodacom will make the effort now to correspond with me.