[quote name='unforeseen']If this is true for your specific GS, then don't deal with GameStop.
Simple as that.[/quote]
I've called Gamestop once in my gaming career, and it was the week of Spore's release to confirm that they had a Galactic Edition in stock. I pre-ordered a copy online and wanted to make sure since you don't actually leave a deposit when you reserve online.
When I called: "Yea, we've got tons of copies. If you pre-ordered, just come on in when you get a chance, and you can pick it up."
When I arrived, less than a half-hour later: "Dude, you're so freakin' lucky. This is our last copy. You need to come to the store next time to pre-order, or we can't guarantee you a copy."
I thought about referencing the conversation earlier, but I didn't think it would make a difference.
It's funny, though... As I walked out of the store...
GS Drone #1: "Our Spores are officially gone." (lol... did you use some sort of special ointment?)
GS Drone #2: "Huh? We have like 20 Galactic Editions in the back."
So, yes, they - and any number of other retailers - will say whatever it takes to get you in a store. If they're actually out of stock, they have a chance to sell you something else, place a deposit on something, etc. They have nothing to lose.