Getting Hosed, Question

I walked away from a job cause the guy wanted to use a flex hose because he did t want to wait for a hose to get ordered then got mad at me lol. All this after replacing his transfer case and drive shaft in his 01 Infiniti qx4 in the parking lot of his apartments. And it was an hour and half drive to his place. I also adjusted his seats for him cause they wouldn't go backwards(electric) I did some other things for him too. But that hose I just don't trust. Don't k ow why