I was ordering a new mobile from Tesco and they sent a pin code. I put the pin code in my lap top and put my mobile down. I haven't touched it again until now and there is a message which looks like it was being sent from me in spidery lettering which says happy birthday. The ay is on the line below because it didn't fit. I didn't do this and no one was with me. The thing is it is my birthday very soon - is there some button I could have pressed?