As I've ambled through the posts on this thread I've shaken my head, cringed, and nearly cried from laughing so hard.
In the late 70s - early 80s I worked (part time) in the gun department at H. Cook Sporting goods in Lost Wages. There was a full time gun department manager (Keith) who knew a fair bit about guns, and there were three of us zoomie air traffic controllers as part timers who knew a lot more than Keith because we were interested in guns so we were personally motivated to know about everything in stock.
All three of us wanted to be "on duty" when the store got a delivery, and many of the new guns actually made it into the gun case. We three were official members of what we jokingly referred to as the "gun a month club." (The employee discount didn't hurt.) Keith would sometimes get frustrated because customers would call or come in and ask for one of the three of us by name. The term "multi-tasker" wasn't a thing back then, but we were good at it, and we prided ourselves on great CS.
Another big SG store bought H. Cook. They wanted us to take lie-detector tests as a requisite for continued employment. My two pals said, "No way," and quit. I took the test out of curiosity, then quit. Keith stayed on, and he hired more part timers to fill the void. When I'd go back in to check their stock I would find the folks cajunlawyer described in his opening post. They wanted a pay check, but they truly had no personal interest in learning about what they were selling to get that rent, gas, and food money.
Go into any big liquor store today and it's the same way. Most clerks couldn't begin to tell you the difference between a Scotch blend and a single malt. So it goes.
Is the customer always right? Well, it depends..., doesn't it?