Big post, but backstory is all-important!
I was going through a seriously bad patch. I was getting paid 5k too little, and when one of the two supervisors in our department left, I thought it was my chance to move up a step. I'd done fucking well with that company. I'd streamlined the entire billing process, was dealing with call records from two carriers daily, making the monthly billing run faster and I'd made considerable savings by changing to e-mailing only for customers who wanted to use software to analyze their own call records. I even went over and above my job description by visiting customers to help them out with our software.
Anyway, the job I wanted was given to a girl from another department, even though she didn't know it as well as me and tended to rub everyone up the wrong way! We also got a new boss who was an arrogant twat with no idea what was important at any given time, even asking me to put a hold on my 1.2 million pound billing run just to work on a fucking spreadsheet.
When I refused, he got the arse and made a few comments. I got wound up, told him to fuck himself and then walked out. I felt tottally pissed off with the whole thing by this point.
My line manager (one step down from the new boss) called me at home asking me if I'd please come back. I did, but I never spoke to twat upstairs! I handed my notice in a few days later when it turned out that I was last in line for my yearly appraisal and they wouldn't be giving me the pay rise that my line manager wanted for me as they'd spent their entire budget!
Two days before my notice period was up, someone drove into my car in the car park and said nothing. I e-mailed the entire company, directors included, asking which **** did it. In reality, I knew who did it as the green Ka next to me had left its paint on my car!.
The next day, my second to last day, I got into work, only to be greeted by a shitty e-mail from the girl who hit my car (strangely she'd gotten a lift in that day!), telling me she didn't like being accused.
I e-mailed the entire company, including directors, and told them all to get fucked.
The IT guys loved it. I recently saw one of them and she said it was the stuff of legends. The place was pretty shellshocked!!