Also, check to see what the recording-conversations laws are in your state. If only one person needs to allow, record some of these sumbitches surreptitiously.
I had a supervisor once that every time he would call me into the office I’d take a small recorder out of my pocket and set it on the desk and say....you don’t mind if I record this? It was pretty funny to watch his attitude change every time. We despised each other and he would’ve gotten rid of me if he could have.