When I worked in customer service, I got stupid questions all the time. Trust me, they do exist. For example, no high-end retail store would ever hold an indiscriminate 50% off everything sale unless they are going out of business. Many products would be sold at a loss, especially those already marked down. Yet, someone once started a rumor that a store I worked for was doing that, and people called us on the phone to ask if it was true because they could not find it on our website. Another time, a customer asked three different employees, each within ten feet of the other, where the nearest gas station was hoping to get a different answer. I have also had numerous customers ask me for directions, and upon further conversation discovered that they do not know what state they are in.
Then there are the closely-related stupid requests. "I am a foreigner and cannot count your currency. Will you do it for me?" Sure, and while I'm at it, I'll just take this fifty as a tip. I never did that, but I could have if I had no conscience. Then there was the classic pulling two items of different brands off different racks but demanding the same price for them because "it's the exact same thing." Yeah, except this one is cheap imported junk that will disintegrate when you use it and that one contains precious metals and will last for centuries.