I think your actions were right. I might have just quit #3 without calling the hotline, but other than that, I could see myself doing what you did- and I have the same kinds of questions about myself - do I have good boundaries or an absurdly low threshold for nonsense? No idea.

I agree that it's interesting that you find yourself in these types of situations repeatedly. Do you ever get warning signs before you accept a job that this kind of thing might happen? In hindsight, were there red flags you could have seen before you started working there?