These people keep calling me looking for james i tell them they have the wrong  number them they use different area codes,then when i ask them why they keep calling they hang up, please help

You are probably being called by foreign, or domestic criminals faking their phone number. (1) Do not answer numbers you do not know (2) Do not call back numbers you do not know (Look them up first) (3) If you MUST take the call, hang up right away if it's someone you do not want to talk to. Please think of your phone as you would your house, or car. Protect it. Invest in a call blocking app for a cell phone, blocking device for a landline.

got a call from this number- just a busy signal when i called back.

Received a call from (720)880-3442 and I called the number back and I get a busy signal

This person calls - asks for my name and hangs up
Every single freaking time
I'm on the DNC
Just plain rude and annoying