I buy presents for a relative but he won't arrange to meet for me to give them to him?

Their birthday is around Xmas so they are away on their birthday. Last year I told them I'd bought them a present & to contact me when they returned from their holidays. They didn't. I was so annoyed as I'd bought a present for nothing & it was something quite specific so it's not like it was something I could give to anyone, so I wasted my money. I contacted them when they returned & they still never arranged to meet up. The odd thing is they do seem to enjoy my company when we are together so I don't get why they do this avoidance thing everytime I try to meet up. Same thing has happened this year, I bought him a present, told him I'm going away soon so we need to meet up, and again no reply. So I've been taken in 2 years in a row. About 3 months after his birthday he met up with me & he seemed to expect me to give him the present then but I didn't as I thought his behaviour in avoiding me was rude & selfish & I felt he didn't deserve the present & it was no longer relevant at 3 months past his birthday! And he only lives a few suburbs away too, so distance isn't an issue. This is the height of rudeness, it's my 23 year old nephew & you'd think he'd know better to have some manners at that age. Obviously I won't bother buying him a present next year, but what would you do about this year? I've texted & emailed him about getting together & no reply. Usually I tell his mother & she eventually gets him to contact me but I think having to do that is silly & I'm not going to contact her this time.