Billing for Free data given

I complained on hellopeter about your vodacom website and that i could not log on, after helping me and sorting the problem out, i was GIVEN FOR FREE 1gig data FREE for 3 months. yet i viewed my ACCOUNT SUMMERY and i am being charged R250 for that 1gig PROMO FREE for 3months Data. that is theft, dont tell me you giving me FREE data and then you are charging me for it. You WILL REFUND me that money, otherwise the matter will be taken further, i have the account summery printed so you guys cannot tell me that i am lying. You are *****ing money from your customers, this better be sorted ASAP.... YOU BEEN CHARGING ME R250 X 3MONTHS for FREE DATA