Dads that do the minimum but want applause 👏🏾

I posted last week about my ex refusing to do exchanges with my SO. Although I initially agreed because I wanted to keep the peace, I thought about it and I think it’s ridiculous. I had to do exchanges with his old woman two years ago when I didn’t want to so he needs to suck it up like I did. Anyway now he just sends the kids out of the house to the car. He used to put them in the car and buckle them into their seats and give them a kiss but now he doesn’t. I can’t even talk to him about it because he doesn’t even come outside; he just closes the door behind the kids. I tried calling him but he just says “I don’t have anything to say to you and I don’t want to hear what you have to say”. My SO then tried calling him to talk about the situation but he wouldn’t even take the call. I called his mother and told her communication between us has been terrible, hoping she could intervene. My mother called him and apparently he’s pissed because I told him he’s a bare minimum dad. I guess he wants a pat on the back because he has the kids 3 days a week. He’s ridiculous. He doesn’t pay child support, he doesn’t call them on the days he doesn’t have them, he doesn’t even take them to get hair cuts. I’m the only one that takes them; he seems to think they don’t need hair cuts. If it was up to him, they have dreadlocks like him.