I have been heard to remark in my working career that there is only one type of customer that irks me. That really gets my goat, boils my potato etc etc.
I can put up with the screamers. With the criers, the whingers, the raging angry people. I don't mind the sarcastic ones or the dumb people who just don't understand.
It's the Mrs Buckets of the world who annoy me. That's Bucket, pronounced 'Bouquet'. If you've ever seen "Keeping Up Appearances" you'll know what I mean. They're those ladies (or men!) who feel such a sense of entitlement that the circumstance of anyone saying 'no' to a request of theirs is just... unfathomable! Used to having everything handed to them on a silver platter, the idea that perhaps their money/position/rank/power cannot get them what they want RIGHT NOW is often very foreign.
They react in various ways, and I deal with them according to how I'm feeling that day. But every time I get one, I'm reminded of dear Mrs Bucket and her twinsets, pearls and gloves.
Just once, I'd like to take them down a peg or two. But maybe in another life. Until then, I'm icily polite and bluntly practical. Sorry Hyacinth, I guess I DON'T know who you are. And if I did it wouldn't make a difference!