Called, no message.  CID = "UNBOUND 30390"

Received a call to my cell phone (a number I do not give out to many people or companies) today (14 Apr 2017) at 1:36 pm (Central Time.) I answered the call, but there was no reply on the other end. I have saved the number in my cell phone Contacts and named it SCAM14. I have received 13 previous calls from the 614 area code and others, just like this - no one on the other end or no voice mail message left. I called this number using our land line and all I got was a busy tone. I suspect it is connected to a robo caller for some kind of scam. Edit: From Switchboard.com I learned it is a VoIP (Voice over Internet Protocol) connection.

Several calls for a lawn service.from Westerville area.

30390 is the zip code for Atlanta GA.

"This is Allison from the warranty department." CLICK, boy does this girl get around. I've lost track of how many companies she scams for