I always receive wonderful service at Yorkdale and although I understand your frustration, I can't help but wonder why a closer inspection of the bag you are purchasing isn't happening on your part? If it's defective, don't accept it, thus saving yourself from being put into this situation.
I've been purchasing bags for years from LV and always give each one a good look over prior to purchase. I can honestly say, I've never had to return a single item.
Because the SA was rushing me and there was a sales event happening I was there 10 mins. Yes You are right, the second time I went in I made sure to thoroughly inspect my bag and now I am happy with it.