if you, nicely, talk to the bank, they can remove your late fees.

I work for a bank and this not true at all. Setting an expectation that we can just waive fees as a courtesy is hurtful towards the bank because clients get this idea in their head that, even though they signed a contractual agreement wherein they agree to the late fees and agree to the validity of them, they can be waived. This just leads to entitled people who throw tantrums when they're told "no". It's on a case by case basis whether or not the fees are waived, but asking nicely is not a guarantee at all. It doesn't increase nor decrease your chances of getting a refund.

Report him to the state labor board.

He "thumped him" - what does THAT even mean?

In Australia to thump someone is to hit them in one way or another

He fired you when you hit him? Ydi

I get the being angry, but don’t compound things by catching an assault charge.

I dont know what that means. You thumped him?