Who called from 2134465093

A few days ago I got a txt message:

"You've been selected to Win a $1000.00 Best-Buy Gift Card! But only the 1st 1,000 users that enter code 7777 at bestbuyprize.com will actually Receive it!"

This text was sent to my phone at 6:21am.

You've been selected to Win a $1000.00 Best-Buy Gift Card! But only the 1st 1,000 users that enter code 7777 at http://bestbuyprize.com will actually Receive it!

Mine too... What is this?
And how did it get our numbers?

Got same best buy text msg.  I think its a scam.   Very lame

Text message about Best buy Gift card for $1,000.  Code no to give  1st. 1,000 actually receives   it.