Debiting my account without my approval (*****ing from your customers)

Vodacom gave me a product without my approval, started debiting my account without my approval and I have been trying to sort this out for two years now.After my contract ended I asked them not to renew my contract since I wanted to decide whether I want a laptop or a phone but after a few months of not deducting ,Vodacom started debiting my account,when I went to your branches in Newcastle and Newcastle mall I was sent around and I was told I had a product and insurance with Vodacom.After days of fighting I was told it was an system error NOW how does your system debit customers account without their approval?I have asked for recording and names but was never assisted.I have done everything I've been asked to do which is send an email with my ID,3 signatures and an affidavit for ***** investigations but I haven't heard anything from you but you are busy sending me messages saying I owe you.i already sent 2emails but no feedback and this is not right,you are *****ing from your customers and don't want to acknowledge your mistakes.