I had to deal w/ hostile weekend warrior homeowners one summer @ HD. dude would buy a trimmer or whatever (his 1st gas operated tool), run it the 1st day, put it away, and couldn't get it started the next weekend. then they return it, "it won't start, I want my money back". one guy said "look, I got blisters from pulling the cord!"
of course, we take it outside and get it started right away. idiots don't understand 2 stroke engines.
they still want their money back.
other ones would bash a stump w/ the new lawnmover, bending the shaft and stalling it. "it just stopped running, I want my money back".
manager would ALWAYS cave in, making us look stupid.