Who called from 3477215217

Got a text from this number just after 7:00 am on a Sunday morning, saying WalMart is giving away gift cards to Facebook users.  It looked suspicious to me.

I got the same text. Not sure how I got on this SPAM text list, and don't know how to get off of it.

"Walmart is giving away FREE Gift Cards to all Facebook Users.  Get yours now at www.AvailableGiftCards.com after clicking Post to Profile." text to me at 8:48 am on Monday morning.

"Walmart is giving away Free Gift Cards to All Facebook Users. Claim yours now at www.availablegiftcards.com"

SMS received at 9:12am EST Tuesday, April 17th 2012

Attempting to find out the address led to what looked like a mobile Facebook login page.

received unsolicited text message that reads "Walmart is giving away Free Gift Cards to all Facebook users.  Claim yours now at www.availablegiftcards.com."  
When you go to this site it leads to what looks like a facebook sign in page.  I suspect this is an attempt to steal login ids and passwords.  
When I tried calling the number from another phone, I got a message that "this user has a mailbox that has not been set up yet."