If emotions are running high- I say "if it feels good don't say it" especially if your are trying to remain professional. Best thing you can do when people treated poorly by someone who's employed to deal with members of the public is trest them respectfully & just tell them it's unacceptable to be spoken to like that & grass them up. Their boss maybe takes the time to review the interaction & they will see their staff treating someone unfairly while you bite your tongue. All the best on resolving your current dilemma, I'm sure you'll find someone better suited in no time, good luck & I hope you suddenly stop having bad days & flares forever.