Are you kidding?
It has been almost 4 years since your alleged "rip off" and now you want to do something about it?
Court system? For what? He is a businessman, a salesman, and you got "sold"!
He didn't do anything illegal, so what's the problem?
You want to punish someone because of your lack of impulse control at 3am?
Don't blame someone else for your own stupidity.