Hmmmmmm, sounds weird to me hun. I'm sorry they keep forgetting! 30 is a big one (Happy Belated 30th hun!!!!) and they should definitely have remembered especially as they indicated that they knew in was coming. Very very odd hun. The thing is, if you return the 'favour' they would probably be offended/horrified not to mention they would think it was disrespectful that you have forgotten. Dunno hun