Some people just want to argue and fight. They like the attention. They like the excitement.
We all know someone like that.
What do you do when you get a confronting email, Tweet or WhatsApp from a crazy person?
Play dead.
Sending a reply is like adding petrol to the fire. Your reasoning will be overshadowed by their need for battle. Their urge to bully and win.
Just let it go.
Arguing with a crazy person is like that is like wrestling with a pig. You get dirty, and besides, the pig likes it.