Some years ago I spent a career break working as a dispatcher in Scotland, where we got to know a lot of the based crews well. One particular one, known to us as 'Stormin Norman', a captain with a now defunct Gash 8 operator, had a particularly brusque and unpleasant manner with many of us.
One day he had a go at me for no good reason, and I have to admit that I bit. "Listen Norman, I don't have to do this job. I like it, but you don't get to speak to me like that. I have a college degree and more than 20 years management experience. Now change your attitude or I am walking off your flight and you'll be late home. Again." Or words to that effect. Uncharacteristically, I managed that without profanity.
Y'know, he was a pussycat after that. I just hoped his CRM was better than his attitude to ground staff. Everyone is just trying to make a living, after all.