There isn't any way that I know of to get them back. However, it's possible for someone to exchange a product without a receipt. They just have to know the state, host, and approximate date of the sale. The HO can look things up for them with that information, which is all available on the receipt they have.Don't get me wrong. It's better to have the official receipt, however, there's no reason to fret about the orders you've lost.