I'm not going to answer calls from a friend going through a divorce
Why would you choose not to take his calls?
I just don't want to have anything to do with my friend cause he's a loser
If you don't like your friend, maybe you should consider whether you're actually friends. If you are, you should think about supporting him as he goes through the difficulty of divorce; he may just want someone to talk to.
You don't understand the situation.
You're right, but neither of us really understand what's going on. At least you should answer the call and chat with your friend to find out.