Vodacom *****ing data from customers

My data is vanishing from Vodacom. I used10gb in 7days, 22/09/21 - 26-09-21, but on 27-09-21 according to Vodacom I used 12gb for the day!!!! But can't tell me on which apps it was use. How can Vodacom not have a system/tools in place to be able to check what is happening with my '******' data? There was this same issue 2 yrs ago with customers complaining and Vodacom blamed it on 'Glitch' on their system. Nothing was obviously done about this 'Glitch' and they don't refund either. Time to switch to other service provider people. If Vodacom is so *********** of fixing this, how will they be able to keep their customers happy, except for themselves🤬🤬🤬