Interested in others' views on this. Say a family member had got you something for Christmas and it didn't fit or just wasn't right, would you tell them?
My view is that it's not worth the hassle but then I am a people pleaser. I'll just quietly donate.
YABU = You should tell people if it's the wrong size
YANBU = Suck it up, it's the British way
Signed, the recipient of a pair of kids' (not kid) gloves!