I seldom use my data. I carry over most of my monthly plan. But I tried to use it earlier today and was getting no connection. When I checked it out, my entire data plan (1 full month plus the remainder of last month's) has been used and I have been charged for data up to my monthly cap. I have top-end Virgin Media broadband at home. I have all the music I would like to listen to stored on my phone. I am disabled and at home all day most days, and when I am out and about, most everywhere I go has free wifi. If I do use data, it is for casual browsing, email etc. So how can this have happened?