I'll admit i have a few times
I called once and told them about a bios beep code for a very old pc (failed video card)
and i heard them clicking on the keyboard
I knew it was not in their database and the kid told me i needed a new motherboard and offered to come and install it for me.
I then told him Gee that's funny if I remember right that code is a failed video card in the original IBM xt personal Pc.( 286 with 2 meg of ram)
resulted in stunned silence then they hung up
dirty trick I know but fun just the same