Oh, we've all had days like that . Not being loco though, I never had several in a row.
As captain, you are put upon to be the frigging all swing eye on occasion. Alot of these problems stem from lack if support/ manpower. I used to get stressed about printers that wouldn't print etc, then I had an epiphany -actually, if we go late we go late and my blood pressure is not going to rise one notch due to the companies over reliance on IT.
As for surely staff, I expect that. CC are underpaid and overworked so why would they be happy. The atmosphere on a certain ex heathrow based airlines crewbus was like being on a hearse at times .
If necessary just out rude the rude ones !