Who called from 3031478554

Got a call from this number. The caller left no message.

These folks are definite spammers! Two calls within 45 minutes asking for my wife and trying to sell me a new roof.  Thank God for google voice I blocked them forever now!   Total slime.

Received a call from this number on 6/16/14.  I didn't answer because it was from an "Unknown Caller".  Also, the first digit after the area code (303) was a "1".  No such number exists in Colorado that starts with a "1".

Have had several calls from this number. Silence, then it says good bye.

Keep getting calls from 3031478554 recently and every few days.  When I call back just says that the number or code is invalid.  Blocked them.