Anonymous wrote:Block his number. Use a coparenting app.
This. You may have to amend your parenting agreement to specify days and times when you will communicate about the kids. I literally had to tell my ex "I will speak to you on Tuesdays, via email, to discuss upcoming visitation logistics. During visitation, when you have the child, you can call or text me if there is an emergency. Any other communications should be sent to my attorney"
Breaking the rules and crossing the boundaries is part of the narc ex game. Don't play where it's hidden; use a court-approved co-parenting app and track all of that. Protective orders for harassment might be an option if he persists.
Sorry he sucks, OP.