I’m sorry this happened to you.
I have actually been formally admonished and not paid for a handful of honest reviews that weren’t perfectly positive (and were probably used to improve training).
It can depend on the editor, the MSC, and the client can also reject them and refuse to pay the MSC for our report, and there’s nothing we can do about it because we signed away our rights when we agreed to our contracts.
Welcome to corporate ‘Amerca.
My health is much better served by severing ties with those entities and moving on to better things.