Same thing happened to me with Neiman Marcus. Someone stole my Marc Jacobs mouse shoes! The delivery person left the box in the lobby of my apartment building and someone saw that the box was from Neiman Marcus and they just walked off with it. I called my SA a few weeks later because I hadn't received the shoes. She said they were delivered and I said, "Well, I never signed for them." I got a new pair of shoes shipped to me immediately with a signature required!
Maybe you can speak with a manager at the store to see if you can get another bag?
Maybe you can speak with a manager at the store to see if you can get another bag?