How can I use 1 G of data in 48 hours if I was not using my phone

<p>Hi. This is now the 10th time I am complaining. </p> <p> </p> <p>I bought 1 G of data on 22 May .... 24 May I had nothing left and it took R20 of my money on my phone. Can someone please explain to me what us going on. </p> <p> </p> <p>I complained about this so many times last month .... In the end of the month I had 6g at one point. </p> <p> </p> <p>Please resolve this ....... </p> <p> </p> <p>When I looked on my phone I did not use 1 G. </p>