I had a problem with a PowerMac G3 back in the day and I somehow managed to escalate up to tier 3 which is to say an Apple HW engineer. He was brusque bordering

I had a problem with a PowerMac G3 back in the day and I somehow managed to escalate up to tier 3 which is to say an Apple HW engineer. He was brusque bordering on rude, but he immediately recognized it was a problem with an undocumented jumper setting on the motherboard and solved my problem inside of two minutes. It definitely increased my customer satisfaction.