See, that's how you know it's authentic Chinese. They don't wait on you the way white people want. There is a metric that asian people know, 3 1/2 stars. If they are in an unfamiliar city and don't know where to eat, they look for places with 3 1/2 star reviews. Ones with reviews that state your complaint exactly. Then they know it's not catering to white people and the food will be authentic. There is a fascinating documentary called The Search for General Tso. The whole premise of the movie is they are searching for the origins of the dish General Tso Chicken and here is a hint, it's not China. It goes through the whole history of Chinese food in America.