That crossed the line for me and I filed for a D and got a protective retraining order so as to keep the status quo of the kids living with me.
Sounds to me like she is not giving you much respect. It is up to you to become stronger and not be a push over.
I'm not quite sure how to do this and my A is not answering the phone. If I fill for a restraining order I will have to show proof. The only proof I have is the kids telling me this.