Who called from 7125457750

I have call from this number I don't know when I call back the phone sound busy ??

Received a call from this number.
11:30am They do not leave a MSG. I've been receiving telephone calls every day for a week from telemarketers. I used the service for a temporary cell phone to use from my phone. "BURNER". This is what I get!

These pricks call me every morning about some medical alert thing. I have constantly told them to remove me. No good. Please prosecute them to the fullest.

rings 2 or three times a day no one there ,called it back rings once then nothing!!!!!!!!!!!!!!

This number keeps calling me for no reason. When I answer they hang up and call back the next day. Very annoying 7125457750. How do I block them?