VODACOM RIPPING 3G CLIENTS OFF

I HAVE BEEN CHARGED RIDICULOUS AMOUNTS FOR DATA USAGE<br> I have a 3gig data on a RED VIP contract . My contract is about 18 to 20 months old.Before my month bill was about R3000 a month ,for the last 3 months my bill was R8000 then R22000 and now R32000 and next month is going to be R22000 again .<br> I have a small business and very little data use,only used for e-mails .When i speak to Vodacom ,they say that it is gmail that used the data up . I think there is a big problem with Vodacom data<br> If there is someone out there that can help me please contact me by mail on [Email Removed] or on *** .<br> THANKS IN ADVANCE