Where is my data going??

I have seen a lot of people complaining about data going missing or data being used too quickly but I never really noticed it happening to me, but today that changed.

I've just recharged my phone with 1 gb of data on the 21st of August 2017 earlier in the day and suddenly around 12:30 on the 22nd I receive an sms stating that I have less than 133mb of data left on my account. I checked my data usage on my phone and it said I used a mere 162 mb during the day.

I have been a loyal customer to Vodacom for almost my entire life and I have been on a contract with them for nearly three years now and this is how they want to rob me. Fantastic Vodacom! Well done! Are you building a Nkandla aswell??