Proof Vodacom is taking my data

Ok ... 3rd complaint regarding my data.<br> <br> I am really upset. I had a problem with my data in 2015 ..... long story short .... vodacom made a mistake. When I got a notification all my data is done, I had 3.5 G of data on their side.<br> <br> Now... Monday 28 March I bought 2 G of data and airtime. Just got a notification my data is done, and I had to buy new data. <br> <br> Referring back to my previous requests ...... Vodacom phoned me and talked in a way that I am an idiot. I told them I don't agree with them regarding my data usage.<br> <br> Now I got proof. According to my phone .... I only used 800mb of data. Up to now ...... 2G and Airtime is done. <br> <br> <br> Where is it ???