I'm a manager and considering this event happened at work I did not express my anger as that would compromise my position. As I said in another comment, I absorbed it and that person had no clue as to how annoyed I was, neither did the Director who I was speaking with in the first place. That would have been unprofessional of me and that's not my style. It made me angry, but my workplace isn't the appropriate place to allow to show it.

I don't like most people at the best if time for pretty good reason, this even just punctuates my reasons.

People get angry for various reasons, and why I got angry in this instance, inwardly is a culmination of many frustrating years, again, the point of this post. People won't understand, could never understand, unless they have been through it themselves.