Vodacom data disappearing !!!!

I am having constant data problems with Vodacom . I keep on recharging a gig at a time and i have lost so much data in the past week! The customer care people are useless they ask me for itemized data usage on the app and its not even functional on the app !! My work ****le has lost over 8 gigs last night , day and night data in ONE shot !!! This is nonsense , I work in the hospitality industry and I need my data to make bookings and send emails to guests !!! They steel data and they not helping one at all to retrieve it again!!! Do I need to email or call the CEO before they help me ????