Everytime I send a message or ring someone, my phone informs me I have exactly 10 pounds and 94 pence credit left.

It's done this for about 2 weeks, and it still hasn't gone down. I think I must have spent more than £10 by now.

Do you reckon I'm actually getting freeness out of O2 or am I suddenly going to be hit with -£80 credit or something?

I might ring australia, just for the hell of it.