Disappearing Data - Vodacom has No Answers & Their App even more clueless !!

Disappearing Data - Vodacom has No Answers & Their App even more clueless !! I have logged calls and calls but they just don't get back to me. In one day more than 120GB just disappeared, yet the App shows no such usage and stats. There is no tracing it and Vodacom cant help. I am beginning to think Vodacom is slowly but surely rooting out all the BLACK FRIDAY special customers that it has realized now - are simply not making them money - this to force them to take up new "profitable" contracts - NEWS FOR YOU VODACOM - TIME FOR A NEW ISP !