Caller left no message on my cell phone. Out of curiosity, I called back and got a recording saying I had reached "Julie with rewards redemption. Because we had recently visited one of their affiliated websites, they had a rebate voucher for us, redeemable at Walmart (and other stores). Press 1 to be connected..."
I don't give my cell number to businesses so it is a scam.
Left no message, I figured it must not have been important. Now they are blocked from calling back. If you want to start blocking these clowns you need to have blocking option on your cell phone !