Sick and tired of Vodacom debiting my account *******!!

I am fed up with Vodacom taking money from my account *******. Last month debited my account for the account that was opened under my name **********ly. I don't know if they do not do verification when they open cell phone contracts. I went to the store to find out as to why they are taking money from my account, they checked their system. Contract was opened under my names but documents attached was somebody else's which is a complete *****. All that they have on their system is my id number and my banking details. I was advised by the store to do an Affidavit dispute opening an account with vodacom. I did that and took it to the store for investigation. Today again vodacom debited my account, I am sick and tired with vodacom messing up with my account. This is costing me money and time for this mess!