Vodacom has ********** working for them!!

I have had cellphone contracts and store cards before but I have never a ***** account opened using my ID number but different name until I took out Vodacom Fibre contract. all of a sudden there are debit orders off my account for another contract. How did Vodacom open a new account with a new name using an existing client ID no? someone in Vodacom must have overridden the system. This is an inside *****. I have had friends experience this with Vodacom before!! They cant even resolve the matter. its been weeks now, still no resolution.