It always seems like you're at the mercy of whoever inspects your bag... and the inspectors are TERRIBLE. And their reasons for rejecting you are even worse.
They rejected a Club Monaco top because it wasn't in their list of "accepted brands". Here's the proof: http://cl.ly/image/1p1i2C*******h
It seems like whoever is working that day just made up reasons to not accept items, because anybody would know that Club Monaco is a very renouned brand. As far as I know, they cannot return your bag to you unless you pay a pricy fee so I really urge you to make sure you send them items you are willing to part with. If you want to sell good stuff, list them on your own at tradesy, poshmark, or shop-hers.
Good luck. Happy selling!