Wasnt the salesclerk at the CC supposed to scan in the 360's serial number that is on back of the console? If so, the receipt should have the serial number of the 360 printed on it from the barcode.
If the serial number was printed on the receipt, the family is good as fucked. If not, they need to get a free 360 from CC, but the family should have had checked the weight and contents before they left the store in the first place....
When I got both original broken and replacement 360's at the EBGames, the clerk scanned in the console's barcode on the back and gave me receipt with the 360. Same thing went for my old PS2 at the Walmart too.