do what i do... call it back... but put *67 before the number so it blocks your number. listen to the voice and see if you recognize it, then hang up. and if its who you thought, block it.
Or call your local police and advise them of the sirtuation if its a case of continued unwanted calls, harassment or stalking. A VZW rep is not going to tell you who is calling you due to privacy reasons.
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