No service but monthly debiting

On the 8th of January Elite Mobile phoned me offering R100 air time for R79. I took the offer but soon realised my number has been changed to contract. Meaning I could not see people's contacts as they phoned. I could not even activate my BIS I then phoned vodacom asking them what's wrong, they explained that my number has changed to contract. I then asked them to change it back to prepaid. I also phoned Elite Mobile and asked them to cancel the contract they agreed. To my surprise they still debiting money from my account even though I'm not getting airtime or any services from them. I've been trying to get hold of them by phone but they don't answer their phones. When I finally got hold of them they told me that Vodacom has to cancel it and that it has been cancelled on their side. Vodacom also says its Elite mobile that has to cancel. Up to this day my problem has not been resolved and every month my account is being debited for services I don't even get. In total they take R135. I'm really unhappy about this. Noni from Vodacom promised that Elite Mobile would call me after I spoke to her. But they haven't.