Who called from 4082016134

I received a call from 498-201-6134 today 2/24/14, it no speak then hang up, I call back but message is full and can't leave messages. ...
Very suspicious!

I received a call from 498-201-6134 today 2/24/14 5:40pm and then they hang up, I called back but machine is full.

Called at 5 pm on 2/25/14 and said they they were with renewable energy.

This number has now showed up on my Caller ID twice: first on 02/24 and now 02/28.  First time, I wasn't sure whether or nor a so-called "wrong-number-call," but now I'm sure it's a new scam try.  We never answer calls from unknown callers.

Received a call from (408) 201‑613‍4 to Campbell CA
Wednesday | February 26, 2014 | 12:45 PM PST
They left no message