Got the same phone call. Guy with a very thick accent claimed I won a trip. He said he was calling from the National Grand Center. He told me a manager is going to call me back with details. Now that I think about it, I don't remember him ever using my name. I'm pretty sure it's a scam.
I too received a call at about 8 PM but I did not get to the phone in time. I am in Louisiana and have no one I know from there (anymore). They left no message. Put them on me list of disregard calls.