I'd give it a try. You've got all the paperwork they require for a refund. Don't laugh about it being 6 years. When I worked for Bed, Bath & Beyond, I had an elderly couple come in with a down pillow they bought 3 years before they wanted to return. It came complete with drool stains on it (I mean it was NASTY looking!!). Although they didn't have the receipt, the store manager gave them a credit. Go figure.