(((((dar)))))
I think NC is right. When he gets angry like that, you need to remove yourself from it. I think you are better off just hanging up than getting defensive, or lashing out. I think the anger is an expected part of this, he is frustrated, he is unhappy, and he can't figure out why! At this point, it is still easiest for him to blame you. Try not to give him ammunition in that effort!