I've actually done worse to a bad employer...

I picked up the phone, said my name, and as soon as they dropped that, I said "Oh, he's dead" and hung up. My former boss sent me a text later going "Very mature, but very funny"

Edit: Boss was the only one who had his head on straight

I know a woman who did this but to credit collection agencies. One day the police showed up at work and arrested her for fraud. Obviously not the same thing as you had no contractual obligation to them, but telling everyone you’re dead is generally a bad practice.

That's a good point, but these guys just wanted me to help them unfuck what they fucked up.