Bought suitcase which found out to be smaller than...

Bought suitcase which found out to be smaller than I needed. When I returned was told that I wheeled it so can't be refunded. When I check the suitcases on display; wheels are the same . I got it from their display. Disappointed! Folks don't wheel the new one even if u think the right size . Carry it on your head. I won't be buying from there.