BTB, the tw*ts you refer to are the people who pay your wages! There are obviously some problems that your management need to resolve, but please don't always expect your salary contributors to be sympathetic.
Anyone in the service industry will tell you what a pain it is dealing with customers. It's reality! And, I'm sure that someone, somewhere, must have thought what a pain in the a*rse we all are at some time.
Chill out. We're all in the same boat.