Who called from 4197894178

Just called by this number a minute ago. I let it go to voicemail, but they left no message.

I got the same call from the same phone number today and i swear he either said "hi john this is the police" or " this is john the police".I said i never called the cops.It got quiet on his end from there on.I kepted saying hello,hello,anyone there,hello.I even called them back and no voice,but no disconnect either.I kepted saying hello,hello,hello.i hung up.beats me so hm,weird?

They called me at dinner time, so I missed the call.  They did not leave a voice mail.  When I tried calling the number back it just rang and rang...

kereps calling even after told no

I answered, said "hello"several times but no one spoke. Certainly a robo-call.