Just because someone is an excellent cuemaker, it doesn't mean they are an excellent businessman. Once they start getting behind on orders, it doesn't take but one emergency, to really screw the pooch. At that point, they may realize they should have hired someone to handle the phone and the business decisions. Unfortunately it is too late at that point, and they probably felt they couldn't afford it earlier in their career. In the old days they called those guys eccentric, or an artist, and the customer made up his mind, if he was willing to go through the process. Now, with better communication (versus just the phone) people are able to get upset easier and faster.
This guy's sin, is that he has inconvenienced you. He hasn't stolen, or cheated you. If you don't like it, and he has your deposit, go get it back. Unfortunately, the internet allows people to take things out of proportion on an International level. I know this won't be the popular view, but please think about it for a minute. You are willing to kill his business, because he is behind on his orders. He hasn't got time to answer complaints on his phone all day, because he wants to get caught up, and is depressed by the complaints.
Just an old guy's perspective.