How do you call back private calls?

You can't.

try going to your call history and click that private number to call back. (this answer doesn't work)

You can't. That's why they call it a private call.

you wait for the other person to be linked in from the three way then you ask them why their calling you. Then why they say u called them u get in a verbal fight with them.

I don't. I limit incoming calls by having a call screening service from a virtual office phone provider. The service allow me to accept or reject calls before I can actually answer it using the call...