Backed up a bit here so be patient.
Got a few TLs and ETLs in mind here.
1) I'm sorry but getting into a yelling match with one of your team is not good leadership.
Insisting that if they are going to act like kids than you are going to treat them like kids, is even worse.
Point of note, I didn't get into screaming matches with my kids. It doesn't work on them either.
I also never found it necessary (nor did my mother) to raise my hand to my kids.
Physical punishment is lazy and usually doesn't work very well.
I think the same thing applies to management, the stick works only if you want serfs.
2) I've always gone out of my way to help you even to a point where it got in the way of doing the rest of my job properly.
I didn't mind, thought you were a good person so it was worth it but you've sandbagged me three times now.
The first time I forgave, thought it might have been an accident, something you dropped without realizing it.
I don't trust you and don't want anything to do with you anymore.
3) Yep, I noticed the display was missing, in fact there is a good chance I'm the only person who would have.
Sorry that was such a inconvenience, especially since it doesn't look like SAP is going to let us order another one.
But how does that make me the bad guy?
Is it because once again I pointed out that my job is a little more complicated than you have been making it out to be?
4) You showed me something that I was doing wrong.
That I had been shown how to do a certain way a long time ago and it had never been corrected.
I'll accept that it was mistake but I find it appalling that you feel it necessary to write me up for it.