Unfair listing on Credit Bureau due to Non-existing Vodacom Account

Very disappointed with Vodacom. These people tried to debit my account without my knowledge and after back and forth they ended up blacklisting me after I provided them with all the details. I logged a dispute with them in March and they promised to come back to me within 7 - 14 days. up to this day when I enquire they don't respond while I am still having adverse information on my records on the credit bureau. I have went up and down submitting affidavits and up to this day no solution to this.