Good men don't call their partner selfish for going out for a few hours.
Good men know how to soothe their children, they make it their business to know.
Abusive arseholes call their partners selfish.
Abusive arseholes ring their partners when out.
He's an arsehole and you need to start telling your children you are going out.
Let them cry.
You have two children and their arsehole father controlling you.
You need to step up and take control.
This type of hysterical behaviour is not normal and is best not indulged.
They accept you go to work?
They don't get to control you.
Stop allowing them to think their hysterical behaviour can control you.
It will only get worse.
I have seen it get worse until a mother snapped and took back firm final control.
She wished she had done it 5 years earlier.
You are sending a terrible message to your children, that is, they can control others by their hysteria and upset.