Have you considered making a fake check and sending THAT to them?
Back before moving last winter, I lost my wallet and had to get replacement credit cards with new account numbers because of the possibility of theft. I found my wallet last month, and I've held onto the old useless cards for one simple reason, I provide the complete information off of those cards to any and all phishers who eMail me. They get the bad info and pass it along to whomever hired them, who tries to scam someone in a CNP (card not present, the most common credit-card fraud) or CP (card present, "safe") transaction. The card comes back as "stolen" and the fraudster is busted, later his "associates" look up the phisher and do bad things to him.
These are among the things you learn when you deal with delivery drivers all day.