Who called from 6109930375

This caller has called at least five times over the past 2 days and no one is on the line

I just received a call from 610-993-0375.  The phone said it was PENNSYLVANIA so I picked it up and waited.  At the end of the call there was a recorded, "Good-bye" and disconnect.  I tried to call back the number from both my land line and my mobile device and it did not connect.  How do I report this?  Thank you.

This number keeps calling me.  I never pickup calls from unknown callers.  They never leave a message

This number call and ask for my parents I said there not here

call no message at answer machine.