Vodacom where is my data disappearing too!!??

<p>I received 2G data on the 1st october as part of my package, by the 3rd i reveived an sms saying im only left with 4mb. So i decided to buy 3G of data this evening at 6:15, by 7:10 I received another sms saying im only left with 4mb of data. Im not using my phone as a hotspot and my apps only update when there is wifi! where in the world is my data disappering to vodacom! this is not on!!</p>