No good deed goes unpunished, as these poor contractors now know all too well. A group of contractors from Cheshire filmed themselves destroying a client's brand new fence. That's the opposite tactic that companies usually try to display on social media. Many of them will show photos or videos of things they've created in order to entice new customers. But these folks had a different message to send: respect us, or you'll pay. In the video below, a contractor explains that he completed a woman'…