Ah, you say “don’t burn bridges”, but one of the things I truly regret was not writing a truthful resignation at my last job. Not so much burning and bombing, napalming and then salting the earth around the bridge.
I ended up taking my dad’s advice and just saying something along the lines of “Dear Sir, I am writing to inform you that I am resigning from my role as a… “. I think I signed it with “Yours,” as opposed to anything else.
What I should have said was “Sod you and your badly paid job. I’ve found another place with a boss that is not a complete bullying w4nker and where I can expect a reasonable appreciation of the skills that, so far, your company has ignored or obstructed.”