I'm going to hang up on my dad when he really needs someone right now
Is hanging up on your dad something that you do often?
This is not the first time I hang up when my dad calls
When a father needs help one must not refuse. Hanging up on your dad when he requires support is wrong. Call your father and be there for him.
Nah, if he is suicidal, I won't help.
It would be much more moral of you to be supportive of your father when he needs someone. Family is family, and you should do the best you can to love them especially during their times of need.