I remember one time there was a random Philips TV that just kept crashing when the user tried to do "right" on the last item in a horizontal menu. The client kept testing on this TV, and we spent 3 weeks because my team lead at the time wouldn't trust me that I needed the TV to solve it.
They finally agreed to send us the TV. Solved the issue in 10mins.
They finally agreed to send us the TV. Solved the issue in 10mins.