Point of losing my job because of Vodacom incorrect billing and bureau update.

I'm so utterly disgusted with the service i received from Vodacom. They probably now make me lose my job because of messing up my credit bureau profile, after i told them i can't have negative listing on my account as work in financial industry. Early 2022 i send a cancellation letter requesting to advise contract coming to end and not interested in renewing. REgardless they kept billing me, i kept on paying although did not even use the simcard for longest time. I followed up on 24 May 2022, to ask why am i being billed i send through cancellation. I finally received a call and spoke to Fikile Mkhize who assured me account cancelled. In July 2022 i got another bill of R185, and by this time i'm furious. Account was never cancelled. After numerous communications, i stopped paying these lose amounts hoping someone would call me. That didn't happend. They handed my account over to VVM who harrassed me, even after i send the comms ( apparently they can't see any of my comms). I send the doc's to VVM and all my numerous comms to Vodacom of disputes as well as escalation to Ombudsman and NCC. I got a call from my HR and that forced me to pay VVM to clear my name. Guess what i got another bill now from Vodacom, I'm at my tethers. I take such pride in my credit profile and they completely mess me up. Imagine i choose to pay huge instalments for other debts, but choose not to pay R90. Please stay away from Vodacom if you know what's good for you.