This happened about 4 or 5 years ago but I just found the audio clip on my computer and thought I'd share the hilarity.
A number of years ago one of my developer friends passed some work onto me saying he wasn't interested, which I thought was very odd. So I talked to the guy and did some work on his New Guinea website he has, it was showing all kinds of errors. We discussed the work somewhere around $100, I completed it and drove over to his house to pick up the money. He comes out with $60 saying I did it pretty quick and he thinks it should only be about $60 worth of work, then he goes back inside. WTF?
Naturally I went straight home and reverted all the changes to the website until he paid me the rest of my money and this is the voicemail he left on my phone:
This guy was legitimately nuts, he asked me where I work so he could drop the cheque by but when I told him, he said he was going to come by and shoot me. What a nutjob. I made sure to thank my friend for passing the work along. In the end I left his website with all the errors, kept his $60 and ignored all his communication attempts. He got someone else to fix it shortly after.