then it will be a VERY big reason for sending them back home. I made 3 first days flight free by him, he appeared to be a VERY easy person what money concerns. Isn't it because ME I make this impression? And I'm just a guy from the street although with a swiss passport. Maybe this has done the deal

And then who's fault if they were sent away? Have not presented themselves credible. Your situation will clearly have a plausible explication, too, but actually I don't want to discuss it. My opinion he's very easy and keeps 100% Word he gave.
NB: In my soon 46 I begin to believe that all people have their groups all divided by different weirdness and they can physically not understand each other. It's nobody's fault, just nature. So maybe just not "your" school and not "your" man. But definitely "mine".