I have never had a problem with 02 online, just started my second year with them and they sent me a brand new phone without having to change my tariff.

Im on a good contract which they dont do anymore. £20 a month, 500 text and 300 off peak mins. I dont really use my phone during the day so it works out at like £30 a month max.

I check how many mins I've got left online, its normally updated every 48 hrs. The site is a bit confusing though with stupid terms like 'unbilled usage' and some of the numbers dont add up but its best contract I have had.

Although my mate has had no end of problems with them so think it is luck of the draw. Hope you get it sorted. Ring them up and shout at someone, you might not get anywhere but you will feel better about it!