Have a friend go with you , collect your things , block on all social media and block his number on your phone. If he comes to your door tell him once he is not welcome and if he comes back you will call the police.
It is hard to totally remove someone from your life. But maybe think of your child. Children learn about relationships based off the way they see there parents interact.
You don’t want to have your child thinking it’s okay to be treated terrible.
So if you can’t block him for your own good think of your child