I am sorry he is continuing this pattern of behavior.
Stop answering his calls. That is your way of protecting yourself and setting a boundary.
He calls and yells at you? Hang up on him. Every time he crosses a line just hang up the damn phone.
Second, if he continues to show up at your home — get an order of protection so that stops as well. If he wants to see the kids then someone else has to be there to do the exchange. A friend or relative or anyone but you.
He clearly has issues and blaming everyone else for his problems appears to be one of them.
In other posts here at SI we have tried to help you by telling you how to set boundaries with him. If he says he’s suicidal you call 911 and get him the professional help he needs.
If he rants and raves in the phone, you hang up.
If he sends you texts or emails, block him.
He’s losing his mind b/c he’s no longer in control of you & kids. If you know why he’s behaving this way, then you can understand the situation and take steps to protect yourself.
As I mentioned I did the hard 180 for months while living with my H & kids. I was polite in front of kids. If they weren’t around I did not talk to him or engage beyond a few words. Like hello, good bye and okay.
You are not his wife any longer. You are just someone who used to love and care for him. Now you are someone struggling to survive his latest drama. However this time you are stronger than he thought and he’s reacting out of fear.