My pcbackup?

This program showed up as I was doing a scan on Norton. I Thought it was Norton so I downloaded it!

NOW I cant get rid of it or the emails it sends every day! I keep sending them emails telling them I deleted the program & ask them HOW they got in through my Norton. They dont answer Just say sorry to see me go & ask me to tell them why I left, then send another email the next day. I tried to stop the download but could not. I still dont understand how it popped up during a scan from Norton.

What is this program & how do I get rid of them???