Vodacom is ******** to ***** which their own employees created

I want to lodge a complaint against vodacom. In 2016 I have taken out 2 contracts on my name. I made sure that the contracts were on a top up package. The debit order was in place. On 2016/8/26 I started to pay more and was in arrears. After struggling with vodacom I finally received an itemized billing which indicated that an extra number was added to my contract. I phoned the number and it belonged to an unknown male named Victor. I phoned vodacom and informed them. I laid multiple complaints with vodacom to rectify it. I even went to saps to report a ***** case and e mailed it to vodacom. It's 2020 now and MBD has black listed me for not paying my vodacom account. I even went to lawyers who started corresponding with them and I paid my side of what I owed. The part where Victor owes is still expected to be paid by me. Vodacom never investigated the matter and never removed that number from my contract. I feel *********** as a mother because my daughter's study loan was unsuccessful due to vodacom who discredited me for their mistake. I need help in this matter because no one is listening to me