I ordered a small piece of cast iron bar from eBay several months ago to make some piston rings. On receipt of the parcel, I discovered not only my order, but an identical one for someone in Scotland, complete with the packing invoice containing all his address details.
Being the honest soul that I am, I phoned the company to make them aware of the situation. I would have been quite happy to post the item on to the other person provided that the firm was happy to re-imburse me for the postage.
A very off-hand female said that she could not understand what had happened and that she would have to investigate and call me back. I pointed out that it would cost more than the item was worth for me to return it to them and for them to post it to the correct address. I fully expected a call back to say "thanks for contacting us, please just keep both pieces" but have not heard a word from them, so into my cast iron stock have gone both pieces.
Next time, I'll keep quiet and just thank my luck. Hopefully, it will be something a bit bigger!!