After each call or text I make with o2, I keep getting a text alert from them telling me what my balance is - but I don't know how to stop it from doing that, does anyone else know?

i think the only way you can get rid of that is to phone O2 and tell them you dont want it and they should be able to switch it off, suprisingly.... they are the only network to do that after a text is sent or an outgoing call is ended

I'm o2 and I find this very useful as you know how much you have on your mobile. I would keep it.

If I want to find out how much I've got left then I'll simply dial *#10# in my own time.

I phoned them up once and asked them to turn it off, which they said they had done (by the end of the phone call), but still, 2 years later and i still recieve the damn alerts!

Strange - this has annoyed me for the last 6 years, but after reading this thread, i calleedd them up, they said i would take 24hrs and it was immediately effective. Great!