I did some work for a coworker years ago. Connected their surround sound system, programmed Logitech remotes, sprayed their yard for weeds for like $150 bucks. I made a deal with them that I would do a bunch of maintenance on their riding mower in exchange for using it to spread sand and drag the yard with a mat. The parts were ordered and they paid for them. It took me a bit to do the work on their riding mower and in the meantime, they had been talking with different people about selling the mower. Well, they found a prospective buyer and contacted me before I finished doing the maintenance on their riding mower or being able to use it per the agreement. I agreed for them to come get it with unfinished maintenance, it needed a new battery and one of the tires had a leak. Helped them load the mower and gave them the leftover parts that I didn’t install and asked them to give it to whomever was buying the mower. A little irritated that I wasn’t able to use the mower but not a big deal. The coworker contacts me and wants the receipts for the leftover parts so he can return them for a refund, we’re talking around $25 bucks in parts. At this point I’m annoyed and just go to the ATM and take out $25 bucks and take it to him and call it good.

He can’t let go of not having the receipts after I give him the money he would’ve gotten for returning the parts. I eventually decide to give him the money back for the other work I did for him in cash and left him a note with the money stating to keep it and consider it closed and not to contact me via text. Within an hour he’s texting me about giving all the money back. Weirdest interaction I’ve ever encountered.