My daughter's partner still hasn't said thank you for his present from me. He's been in the room for several FaceTime calls over the last few days and hasn't said a word. I don't expect pages of flowery notes, just a simple 'thanks for my present' is all. Is that unreasonable? My toddler grandchild has been able to do it. Would you say something or let it go? It really pisses me off when adults don't have basic manners. He isn't an arse in other things, just this.