Who called from 5137250399

Constantly calls, instantly hangs up.

called 10:40 this morning, left no message..I called back and phone picks  noone sys hello and there is lots of talking in the background  sound like a call center

Same thing

No name in Caller ID = Do Not Answer! Also suspect it was a "robo" dialed call as it rang only twice then hanged up without waitingon a possible answer.

CID = NAP   Called my landline. When I didn't answer they immediately called my cell. Left no message on either.