Subscription of Content Services

I have checked my monthly account - don't receive invoices or statements from Vodacom therefore I check it online. To my surprise I noticed that I was billed for \Content Services"for the amount of R392.00. I went to a store and asked the person what that was all about - he said I subscribed to the service - which I definitely haven't done. I have sent an e-mail to customer care asking them to remove that from my invoice as I am not prepared to pay for such service as I have no agreement whatsoever with regards to that. I was informed that I have signed up for the service and they charge R20.00 per day. Currently the amount is R411.77. How on earth do they expect me to pay for that if I know for a fact that I did not subscribe for the service. They said they will cancel it but it might take 72 hours - now my question is. Will I get my money back or will they debit my account with the amount due? I don't think it is fair that customers are being treated like this - and I know I am not the only one struggeling with this kind of problem."""