The worst customer that I had refused to pay for the completed product, then threatened to sue me for late delivery. That is, they were contracted to a certain delivery date, and hired me after the fact, with no specified date, then waited one month before finalizing and giving me the specs, then got mad at me because it couldn't be done in 1 week. They got penalized as per their contract with the final customer, so they decided not to pay me. I'm just a freelancer, and they have an established company with a lawyer on call. I got screwed out of $3,000.
Moral of the story, don't rely on a handshake or verbal go-ahead. Have a contract with detailed timeframe, deliverables, and contingencies.
Oh, and, don't work for jerks.
