My friend asked for help and I ignored him. I didn't listen.
Why did you chose not to listen?
I was ignoring him because he is always talking over me.
Its not very kind to refuse to help a friend if they ask for it. This friend could be coming to you for a very important cause. The least you can do is hear out when their problem is.
I would consider being helpful if he was being nice.
If your friend is in need you shouldn't turn them away. There could be something really wrong. You could always talk to him about his behavior as well and let him know how you feel about it.