Not really an AIBU but more of a rant.
I work in the service industry for my sins....and have been dealing with someone I can only assume is the devil incarnate. They are the most unpleasant client I have ever dealt with in well over 20 years in the same job.
Because I'm in the service industry I have to adopt the "customer is always right" and smile sweetly while they spew poison but today I am right on the edge of telling them they can just feck off for themselves. Which of course would result in me being fired.
ARGH.