Same thing happened to me except I didn't call back because I do not know who it is.

Called me twice as well, but didn't leave a message.

This number has called my cell number all most everyday for over a week. I answered once and said Hello, and there was no immediate reply which means a telemarketer. I refuse to answer when they call. I am going to call us cellular and have them blocked.

Telemarketing call, I answered 1 and it was a recorded message but I continue to get calls from this number

Don't say nothing when I answer.. Than when I call back says your international call can not be completed as dialed.

It called me TWICE. didn't leave a msg though.

I have received two calls from this number in 24 hours..both of which I missed.  When I call the number back it is disconnected.

Got several phone calls from this same number. When i answered no reply.?!! Am i supposed to do something to protect myself?! Can they get info from my phone by me answering?!

Received same phone number on my caller id this morning and a text message which stated "call me".
No voice-mail message was recorded. It's probably a telemarketer or a con artist seeking prey, or a lonely prankster that is targeting select people.