Insane data usage

<p>I receive a sms at 07:46 on 24 April 2017 that I have less than 249Mb of my data bundle. At 11am I receive another sms stating that I have 99Mb left of my data bundle. I dial *111# and purchase a 2G data bundle. At 13:46 I receive another sms that I have less than 50Mb of my bundle. At 14:38 I receive a sms that my bundle has run out. I phone Customer care and I am informed by the lady that I have used my 2G data bundle in a couple of hours! She tells me it is escalated and they will contact me in 48hours. I ask her what must I now do in 48hrs. She tells me to not use the internet for the next 48hrs! Are you serious??? I buy another 2G data bundle and in 30mins I receive another sms saying I have used R10 out of bundle data. What is going on with Vodacom's data? This is the second time I have complained about this this month, and the previous time I was also told it was my fault.</p>