Casting Directors: How To Deal With Rejects That Become Angry Or Upset

How do you deal with rejects that become angry or upset?

If an actor becomes sort of upset or angry by being rejected I would try and talk them through what I think went wrong with the casting, how I think in the future it would help them if they could alter something, either about their personality, or maybe sort of have some more acting lessons, or whatever one could steer them in the right direction that in the future will help them.