You didn't have the money but you wanted to have the guy hold the animal for two and a half weeks for you.. and trust that you, as a minor, would get the money in that time and still want the animal?

You have no reason to be mad. That's a bit of a unreasonable plan for getting a highly desirable snake(a female morph). I'd suggest you get the money together first, then have your father do the deals for you, or attend local shows with your parents to get the snakes in person. Just my advice.