Who called from 2243003401

Got a text saying:
You've been Chosen to Win a $1000 Walmart Gift Card!
But only the 1st 1,000 users that enter the code 7777 at
*said website* will Recieve it!

I was awakened in the middle of the night with an unwanted text message from this phone number. I have no idea how they got my number or why I was called, but it was upsetting and I am very angry!

Same thing. Don't know number or web site Walmartprize.mobi