Huge bill from vlive - I never subscribed to this

On the 31st of May 2015 I bought a prepaid Sim card from Vodacom Northgate. Between 31 May and 11 June, over R500 of my airtime has been used by a subscription I DID NOT subscribe to - vlive. I was completely unaware of this until I called Vodacom yesterday, who told me that I was subscribed and \switched off"my subscription. No explanation could be given as to why or how I became subscribed. When the consultant switched off my vlive subscription they also accidentally switched off my Internet connectivity (consultant name - AB on 082 155)"