o ya another thing is if they keep ripping oyu off after oyu tell themt o be straight theyre odviously sure they can get away with it and may be that your jsut "extra unimportant business" you should also threaten his reputation but before you actually make that clear try to spread the word that hes a rip off to other ppl you know he deals to + his buds so the word gets to him. and if this shit dont work you gotta get a new guy
peace good luck