I think any restaurant that disrespects a customer deserves a one.
Just took take out and specifically asked for the egg drop soup to be served dine in, while we waited for our take out.
A long wait ensues - about 15 mins - no soup, no take out. Our order gets called, so I come up to the counter. I point out that we did order the soup for dine-in. The woman nods then says... "Hmmm... Whatever..." She proceeds to call out the next take out order.
I walk out and tell myself I would never give these people a penny of my business... Ever!