The same is happening to be to number 0017538674372. They are texts charging 20p a time. I think it must be an app! I have an HTC. My phone provider expected that I had an iphone when I told them the problem. Therefore it must be the apps???
I have 7 text messages to this number on my August cell phone bill, all on the 8th & 9th of August! This was right around the same time my iPhone 4 was jailbroken & unlocked. What the hell!?
I have the same issue, I have a new IPhone4 and notices some messages being sent to that number (044-778 6205094), it is an international txt, therefore I am being charged. the messages are not showing up on the phone as sent.