I laughed and smirked at this one. I laughed because it is comical how often it happens to employees who actually give a damn about their job and enjoy providing customer support.
However, there are other employees, wearing name tags or ID embossed uniforms, who are simply existing within a work environment for a paycheck. I have seen that dog's look on the employees' faces at a fast food restaurant...
As I enter the restaurant.
As I approach the counter.
As I provide my order.
And as I am handed my order, which hopefully has been prepared as I requested.
So, it is sometimes also the look of "Why are you here bothering me?"