ya ... here's the solution..
1. Buy a gun.
2. Call up the friend that fronted you money and invite him over.. Smoke him up a proper blunt.. Then discuss what happened and pull out your gun and cock it infront of him..Then you tell him "i just smoked you up and i tried to get shit in your best interest till i got jacked, if you try to fuck with me about the money imma fuckin kill you chickenshit motherfucker..but naw man i dont wanna do you like that so...were straight about the money right?"
to which he will reply "ya man! of course"
3.If you smoked him up proper than he would just be chilling and not expect this and might shit his pants a lil so have some Lysol and paper towels handy...Since he was high this made a huge impression on him..Also the fact you pulled out a gun.
this whole situation could have been prevented had you just done step 1. So when some guy takes ya money you just spray him with the fury of buckshot; you have to make sure the the amount of drugs you were buying was not a felony under state law or else shooting the guy becomes a 1st degree murder, otherwise your fine..