Cellphone account authorized without my approval

I took up a contract phone with Vodacom in May 2012 and bought a Samsung Galaxy Tab 7 GT-P6200 and in 2014 when I wanted to alert them that I wont be continuing or upgrading my contract I found that someone had authorized for an upgrade of my contract under the user name VilakaziS.<br> I was told to write an affidavit at the police station and when I went there they told me that it's ***** so a case needs to be opened. I then went to Vodacom to tell them and they said their procedure is to receive just an affidavit then they'll do investigations and all deductions will be stopped and my money reimbursed.<br> I was unable to go back to the police station and do the necessary follow up due to being involved in 3 different accidents within the 7 months after inquiring about this.<br> Right now I just want the deductions to be stopped and my money reimbursed from May 2014 to date (11 months). I don't care about the internal investigations I just need this to be sorted out ASAP and I don't want to see any deductions in April.