More anecdata: my wife is a veterinarian and deals with endless angry customers who think she’s trying to rip them off or waste their time or is just plain wrong. I don’t know if there are more, but there are a lot.
But, she has an out fast food workers don’t. She tells the worst offenders, “If you’re not happy with the care you’re receiving, we’d be happy to give you Fido’s records so you can take him somewhere else.”
They shut up when you remind them you don’t have to fix their sick dog.
I wish more businesses would allow their employees to do this. One of my first jobs was at a call center, and as soon as the customer stopped being professional, I would give them a single warning, and then say "since you can't remain professional, I'm going to end the call" and hang up. It was amazing! Why should your employees have to take verbal or other types of abuse from your customers?
But, she has an out fast food workers don’t. She tells the worst offenders, “If you’re not happy with the care you’re receiving, we’d be happy to give you Fido’s records so you can take him somewhere else.”
They shut up when you remind them you don’t have to fix their sick dog.