Vodacom continue *****ulant actions

Vodacom send me a sms this morning stating that my data bundle has been used up and that 50% of my voluntry call limit has been used. This is after two days of the month. The worst of all is that the sim card is lying in a drawer and not even connected to the vodacom network. I have heard of wifi but this must be a world record that a sim with out any power or device can connect to the internet and use 5 Gig data plus 50% limit. It is the second time as last month Vodacom soft locked me for the same reason after 10 days and I bought 5 gigs and again i received notice that in two days 5 gig was used. I contacted the call centre and was told sorry it was a mistake. Shame on them for thinking they going to get away with this the second time. This is *****ulant at least. Can somebody tell me will a complaint with the Consumer Commisioner work?