Vanished data

I uploaded airtime at 19:50 today and turned it into a gig of data and at 20:00,I was already on 500MB and I hadn’t even touched my phone yet...please tell me how the hell thats possible. I’ve been on the line trying to call for the past 30mins but can’t seem to get through to any agent and the next thing I know all lines are down due to the president’s speech. Even before I uploaded this data,my data was vanishing and I was getting alerts yet I was using WiFi so please don’t tell me about background app refreshments because those are off. I left Vodacom because of this same reason and now by no surprise,you’re also doing the same. You guys really don’t deserve any customer’s,maybe we should all stick to using WiFi and see what you’ll ***** then