I don’t think it was something on WalMart’s side. Electronics these days tend to come in packages that have to be basically shredded to get the item out (100% sealed thick plastic, just had to utterly destroy a box yesterday). There’s no way you can reshelve those in a way that the customer won’t know it’s been opened. A lot of that stuff winds up going back to the manufacturer so they can repackage it in a pristine box, in theory they should be the ones making sure the item is pristine too.
If you're even slightly above incoherent, you can easily tell it's been returned and therefore should check it out before you leave the store...
Bingo!! I think this happened on the vendors end.