Vodacom are ******

I recently signed up for R400 airtime contract, my airtime was loaded 29/11/18 @ 10:39,around 19:12 I received an SMS notification telling me I have purchased 10GB data valid for 7 days which is insane for me to do.I tried getting assistance from the customer service consultant which they all failed to help,and on their chat box they promise to get a consultant to call within an hour who never did.This is **************** and I want my money back they can keep their stupid data.