+1. If your dad hasn't done any of that, then he has on right to call you names. How about helping around the house, doing the housework, washing the dishes and doing the laundry etc to help out your parents while they are at work? Making them dinner occasionally would do some good. As long as you show them you are trying to find a job and in the mean time, do stuff to "please" them so they not only see you doing stuff which has no significance to them.
Don't sell your collection as everyone said, you will regret it in the future. Have you ever bought some of the figures just for the hell of it and you didn't really like it? Maybe sift through those that fit the bill and sell those to help support yourself a bit while you're job hunting.