My N900 has had its run of networks recently. Vodafone barred my sim temporarily so I was using T-Mobile and am now using O2 as they are offering good Pay as You Go deals atm. The problem is that on O2's network my stupid N900 keeps displaying a message saying my current balance after EVERY text!!!

I send a text and a message pops up saying

"Your Balance is £10.00" or whatever my balance is.

Please help this message is really starting to annoy me!!!