For some, this is true. For others, those who can communicate, read and think, it works quite well.
Getting a judgment, something saying the guy owes you, may well be possible, even easy. However, getting that judgment paid is another matter entirely.
Public exposure of his lies and broken promises is your best bet for any resolution in your favor. Humiliation dos wonders for making lying sacks of crap pay up.
I'd go to the BOI with all your information and leave it at that.
Unless you're one of those guys who does door knocking. That can be effective too.