Unauthorized Vodafone live subscription

I got an sms message saying that I am subscribed to some gaming app charging R5 per day. Checked my bill for this month so far seeing that I'm already being charged more than R200 for Vodafone live services, none of which I have subscribed to. I was also charged R70 last month for Vlive services. Phoning Vodacom the call centre agent only cancelled the services but said they couldn't reverse the charges since I subscribed for it. I told her I never subscribed for anything like that and she said that "sometimes you get a pop up screen and you have to make sure you check the cancel box otherwise you will be subscribed for the service". What is she talking about?? Why should I check any cancel boxes if I'm not subscribing for anything? Why is Vodacom allowing these questionable services to be charged against their customers? I want these charges reversed and I want a credit for the amount that went off my account last month.