iPhone 4 not recieving texts, even though i can send them, and receive calls, help!

[pauled]

All of a sudden my iphone isnt recieving texts and its really bugging me, im on o2, i have a full signal, people can phone me and i can text them, it just wont receive them, I have tried taking out my sim and putting it back in, I have turned airplane mode on and off, I have reset the network settings, still nothing, can someone please help me out, much appreciated!

 

[iGaz]

Have you contacted o2? Sounds like a problem on their end.

You've done everything I would of except a restore...