rather strange things happening...and they happened to me a number of times, the worst part about it it happened twice while I was pregnant and out of the house. Had 1.50 on credit, went to the midwife, my husband left me and went to do some stuff elsewhere. I was just suppose to give him a signal when I am done. Got out, tried to ring him- my balance was 00.0??? Had to walk around to find a shop, to top up, only then I managed to ring him back. 15 min after I topped up, the missing 1.50 was back on my balance...? Same thing occurred twice more, every time when my credit was running low...as if they were forcing me to top up. On top of that it always happened in the wrong time. And in both other occasions the missing money magically appeared as soon as I had topped up. After making a official complain to O2 and opening a case, they did confirm that the money had gone missing and than had gone back to me because....one of my app was doing it .....LOL So than how come money had never disappear of my credit when it was not low. Even more funny was the fact that they did admit that my data was not even On at the time this happened ....lying scum is what they are, and I have been with them nearly 5 years...and the amounth of money I have spend on vouchers.... DO NOT USE THEM