It's always awesome scoring new stuff before the official street date, isn't it? Hey...the store did the wrong thing, not you! You legally paid for these figures!
I remember when some Episode I 3-D merchandise leaked out before January 30th there were stores where they'd take new figures off the pegs and put them back in the cardboard shipping cases just to avoid getting in trouble in case a Hasbro rep happened by. They didn't even bother putting most of the prices in the store computers until closer to January 30 to discourage early leaks and sales, though some items slipped through and had already been programmed into the system.