Our client was putting content into their new CMS. I got an urgent call "When I make changes its fine but when other people make content changes the site isn't updating!!". I say, " - are you using the test site or the production site?". Reply "OF COURSE, DO YOU THINK I AM STUPID?"
Days went past with ensuing phone calls and escalation to technical and management until I said "Please go over to the other PC and tell me what the url is..." The reply... "well I told them to use the production one..." aaaaahhhhhhh