The phone is ringing, and I don't recognize the number, All Caller ID says is, "NAME UNAVAILABLE".
Please help me figure out who is calling and what they want
This went to my voicemail. I suspect his/her telephony lagged and he/she didn't hear my short voicemail greeting of "Leave a message" before they got placed into the call. Caller didn't speak, likely awaiting a live person. It was some call center. All I heard was open microphone and background chatter for about 20 seconds. Left 2 consecutive messages like this.