Okay so I am not sure if anyone was aware of this but just in case you have to cover your ass. So I went to my local Gamestop store and I bought a couple games. After my purchase a woman came in demanding to speak with the manager to which she was told the manager was not there. They said she was mad and I asked why. And here's what the Gamestop employee said to me and was very startling:
"She reserved a PS4 and someone else came in with her info (Her phone number was the only thing he told me they had but I'm skeptical) and cancelled her reserve and fundamentally took all of her money"
I asked if she was the only one and if its PS4 only.
He said, "No this has been happening for a while with Xbox One and Playstation 4 Reservations"
He went on to tell me that they will get it sorted out and people will be getting their Next Gen consoles but this is crazy and I can't think of any counter measures other than keep your receipt handy, I did not reserve any of the next gen consoles but BEWARE this could virtually happen with any reserve. Also I have no info on if its been happening with other reserves or other retailers but call them and check up just to be sure.