Vodacom *****ing data and billing me for it.

This morning, in the space of about 8 mins, I got around 11 SMS messages showing that my data went from over 400MB, then less than 264MB, then less than 126MB and then that the bundle has run out. It then started sending messages that I have used R10 out of bundle, then R134 and finally to that I have now used R264 out of bundle, at which point I switched my data off. My phone was laying on the table. No updates were running at all. I would like you to restore my data and fix the billing.