Got a SMS message from this number: "Dear Walmart shopper, Congratulations you have just won a $1000 Walmart Gift Card. Click here to claim your gift. www.WmartGiftCard.com cancel: reply STOP". This is the second one I have received!! The first one was about a Best Buy gift card. I tried to call the number but no one answered and it said the voicemail has not been set up yet.