That's exactly what happened to me. In my case was a woman asking for me (she said my full name) I could not hear the name of the company I was busy at that moment so I told her so, she ended the call.
The individual who called sounds like an indian. He then asked if I am the person he is speaking to (he called me by my full name) and I said yes. He also asked if I signed up for a website (i didn't really hear the website name properly due to his accent) in which i am pretty sure I did not sign up for as I don't really sign up for anything on the internet. I then hanged up immediately. I am unsure of the status of the call.
Unknown - called my mobile/cell in Australia. Would have been 4am their time. Voicemail contained 1 second of background noise, sounded like a busy place. No actual message left.