We can't change listings without making sure the changes are 100% justified.
It's one thing to move an item that only one person has, and the person asking for the change is the owner (this happens more often than you think, people make mistakes when adding new games.) But when an item is already owned by other people, we have to be careful and make sure that the listing won't affect their collection negatively. Imagine you have a game that is obviously Australian, and someone changes it to an America version - and then you find yourself with an American game for some reason. You'd probably be angry.
So sorry about this mess. I didn't mean to make you angry.