You should talk to the first model. You spent more than 2k credits on him, so the least he could do is give you some sort of response. It truly does suck when models make promises and then don't keep them -- feels dirty. Now, about that second one...
Do you know whether any of the "well-heeled customers" simply asked him not to do a show, or to do one in private (perhaps even at another time) for just them? Requests like these are not as uncommon as you might think, so unless you contributed some noticeable percentage of that 20k credits, how are you to say that he hasn't delivered or is not going to deliver on his promise? Feels like there's some missing info here regarding the second dude, but wish you all the best with that either way!
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