A simliar thing happened to me as well. I went to my fave LV and inquired about the white MC pochette (back when it was waitlisted for months)...she told me I would have to wait, I said I didn't know when I'd be back, but I had would've loved to have purchased it that day...she goes to the back and lo and behold is carrying one, saying that I can take it and the next person on the list will get hers in a week! I was thrilled!
Also, I then wanted to purchase the black MC pochette a few weeks later, it was wait listed. The SA told me there was no way I could have it in less than a month or so. I found they had one in another province so I called my boutique to get it shipped. The local boutique then scoured their inventory to see if they could get me one, unfortunately they did not have any in at the time, but had they, I would've walked out with one someone was waiting for!