There are two sides to every story. This guy said the items were never received despite being able to prove they were delivered, he then threatened me with negative feedback if i did not send him another item and refund his money also, and stated he has "big man's people" backing him.  I refunded his money,with paypal since 100.00 isn't wort a negative feedback with ebay's currnt rules.
He wouldn't let it go, he even accused me of sending it to my friends on my feedback profile at which point I put him on my wall of shame for harassment, libel, and blackmail.  At this point he got very ugly saying he was untouchable and has friends that will back him.  See his last post in alt.lasers to see what kind of guy this person is.