Subscriptions

I noticed that my 'Bill so far' on my Vodacom App was very high.I looked at the bill and saw that there were additonal items called Vodafone Live and Content Services. In August these were 210.64 and September thus far it is 315.08.I contacted Vodacom on the 12th of Sept and they informed me that I have subscribed to some service/app. I am NOT aware of such. How can Vodacom automatically charge me if this is not part of my contract? Aren't they supposed to protect me as a customer? Or even just inform me that I have been subscribed to a R30 per day subscription which I still to today not know what it is. I would like proof of my subscription to these app/games etc. Vodacom was able to remove this subscription, but why did I have to phone for this. Awaiting someone from Vodacom to contact me. Please urgently assist.