Calls everyday no message. Call back and it just says voicemail system no identifiers.

Some guy named "Thomas" has called twice asking for my wife. I asked if there was something I could help him with and he started talking about how we were entered into some million dollar cash prize sweepstakes and that we are now in 4 other drawings. I asked him how we were entered and he said, "Visa, Mastercard, Discover, American Express or your debit card have entered you as preferred customers. Which ever one you use most often." Then he asked for my birth date to verify my age and I said I don't give out that information to incoming calls and he just hung up. Sounds like a scam to me.