Unauthorized contract

I am not a Vodacom customer & have never been so it was a surprise for me in August when I had an amount debited from my bank account,I called Vodacom & I was assured the contract profile will be deleted as soon as I made an affidavit & faxed it through with my ID. I went to a Vodashop at Fourways on the 14th of August & I was given a copy of the fax to prove that it went through. I never heard back & I assumed it had been sorted since no more amounts were deducted from my account. A friend in Cape Town (where I used to stay & where the contract account was opened) made me aware of statement letters from Vodacom (I moved to Gauteng beginning of this year). So I would please like to be referred to someone I can reliably send my details to so as to get this sorted out ASAP, because clearly the Vodashop route is deeply flawed. This doesn't reflect well on me & my good credit record (which I'd like to maintain). As extracted from the letter this is the Account number: I***-8 and Cell number ***