Vodacom

I'm very angry with administration of vodacom and thier ***** department, last month I discovered that vodacom has deducted R300 from my account I called them to explain why are they deducting money on my account as I have no contract with them and I have never used vodacom before ,

They referred me to thier ***** department , I sent them my dispute of deduction of money from my account , I was told to go to the police station to obtain an affidavit to swear that I have never open any account or contract with vodacom , which I did and I have sent them my ID copy aswell with three signatures on it , now after I have sent them the email of which they rep**** as acknowledgement that they received my email which means my case is under investigation, they still went on to deduct R3400 again on my account I really feel vodacom is is taking people for granted .