PC Engineers...
I've probably recounted the tale previously of a 486 based HP SCO Unix box I managed for a while. I was on holiday but had taken the company "mobile" (a car phone attached to a blooming great battery pack) just in case. Half way through I got a call, the backup tape wasn't ejecting, what should they do?
I balanced the risks and decided the best thing was to wait until my return a few days later and I'd sort it.
That apparently wasn't good enough, they summoned an engineer, against my instructions and without telling me, from the parent company's PC support people. He travelled the 150 miles or so from the South Coast, turned the box off without any thought of a controlled shutdown, manually ejected the tape then turned the box back on. When it wouldn't boot again he ran away after saying, "Oh shit!" or words to that effect.
It took a few days to completely wipe the file system, reinstall and reconfigure Unix then restore the last good backup tape which by then was over a week old. Had it been my own fault I'd have pulled an overnighter and got it back within 24 hours but as it was down to senior management I wasn't going to rush (you can always find an excuse to go home* such as running a disk check that will take several hours).
*A DEC engineer once used a thunderstorm as his reason for not continuing to fix a fault, I didn't argue as I wanted to go home too.