Who called from 3056779293

This is a very suspicious call.  I hope this one will be investigated.  There is clearly someone on the line but they hang up.  Caller ID reads "." which is terribly unnerving.  The 305 area code covers Miami and the Keys (Florida).

After i answer they hang up

phone rang four times - no caller id so I didn't answer.

I received two calls from this number and both times, the caller would not
say anything just hung the phone up on me.  There was no caller ID information visible.

I received a call 305 677-9293 on message service.  No ID just "." and no message.