I have a very bad experience with o2 as me and my husband was join o2 seens around February, the plan we was join is £20 a month per phone per month but every month o2 is over changed , I am going to contact my bank tomorrow to stop any transaction to o2 from tomorrow,as I went to the Abbey center (where I was started my contract ) few times already , every times the manager said that problem is sorted but the next bill coming is having the same problem, will never recommend this company to any of my friends and family , and my number was stop for two weeks in the beginning because of the girls that work there had make a mistake with the date ! So all I get seens I join o2 is mistake after mistake, that is a joke!!!!