Dissatisfied Customer on doors.

I'm very disappointed with the manager of carrim store in Bloed street, I bought a 2 doors on the 1st December before they close, but I found one damage as it was covered with plastic, we couldn't inspect, but I returned it, so he refused to take it back saying it has marks on it, and their door are kept standing and they can't be damaged, but this one when I got it was on level with other stacked. His name is Adrian.