VODACOM RIPS ME OFF WITH OVER CHARGE FOR DATA

I have 3 contracts with Vodacom. The one is for \My 2 GIG"data which I pay R129 PM. I was shocked to be debited R354 addtional data charges on this number for data usage in April. I never used the full 2 gigs and I never got any message to say that I'm going to be charged out of bundle rates. Vodacom cannot provide me withe the websites I visited or the date and time my 2 GIGS was used up. The call centre is useless as they say I must log onto [URL Removed] to get this info but there is no info. Can someone from Vodacom please provide me with the details of the above. I will not rest until I get to the truth regarding Vodacom ripping me off. """