I want this person to STOP calling me. Have no clue who he or she is but they sure can't get a hint.

Keeps calling, have no idea why but he's getting on my nerves. I've asked him never to call my cell again, yet he still persists.

Here's the deal - when you get calls from numbers you don't recognize do not answer them.  If it is a legit call the person will leave a message.  This number is definitely from a scam caller.  When you call the number back it goes straight to a full voicemail.  They probably can spoof your number if you answer the call that is possibly the purpose of the 3 second delay (as some stated in an earlier post) before they hang up.  I absolutely do not answer unrecognized numbers - you all should do the same.

same thing. first, it was a guy, who mentioned my name, and then said nothing else. then a young woman, who did exactly the same. when i call back i get a vm.

I've been getting calls from same number this is strange. What do they want? I answer and no
One says anything just hangs up!

No one says anything when u pick up.

they call , I pick up  and after 3seconds they hang up. I got 4calls ever since this morning.

they keep calling and saying nothing then it goes to sprint vm when i call back

And then hung up

Same thing adcept woman calls just after i got my gear off and i told her i wasnt intersted i just pulled 3 pepple out of a fire

I answered this by mistake and asked the man on the other end to do me a favor and not call anymore. He hung up on me and called two more times already after that.