They’re shouting at the top of their voice. Their spit is flying everywhere. Their faces are red like a ripe tomato. And they’re angry beyond belief. Rude customers are the bane of anyone who’s ever worked in the service industry.

They’re shouting at the top of their voice. Their spit is flying everywhere. Their faces are red like a ripe tomato. And they’re angry beyond belief. Rude customers are the bane...