old refund bug

Ok this was months okay. But i still had a had a refund or two left. But Syndra was coming out. So i Bought Uydr cause he was on sale at the time. But then Syndra came out so i refunded him and something else, this way i could get Syndra and her Justicar skin. However not to much later i noticed i still had uydr. I should not have him so i don't know if this is necessarily a bug but it prevents a friend of mine from gifting me a certain uydr skin. So i don't know what else to do about this. I mean i did recently buy a skin for him, even though i shouldn't own him.