So this is a sign. If they treated you like that, imagine if you got the job? They were most likely terrible people to work for. Believe it or not your doing it right, vent about it and move on. Keep on pushing, we get nothing if we succumb to stuttering. We have to fall and when we do we fall hard. The feeling is like no other and unfortunately it’s what we have to do. However it shapes who we are as a person and we grow from this. No matter what you do Don’t let this define you. Always forward, never backwards.