Hate to say it Scully but you'll never see the money so don't count on it for x-tra X-mas funds. The person you turned it into.... now they will have a better X-mas!
Just my opinnion, the money never goes back to whom it belongs regardless if it was the person who used the machine before you or the bank institution which spit out the X-tra cash. Somebody pockets it, you can bet on that.
If it was me I would have just smiled at the cash god and enjoyed my windfall.