I say this over and over, but saying no is the only power you have as an actor. At least if you lose the job, you can lose it on your own terms, and not theirs. And I’m not speaking in theory here, I’m speaking from experience. I’ve been asked twice to re-audition for projects over the years. I said no both times. One time they kept me. One time they didn’t. Life went on just fine both times.
You know those wonderful memories you have of your parents waving goodbye to you when you were a little kid? How they would do that right up until the very last second that you were out of sight? And remember how safe and confident that made you feel to be loved so intensely?