Did they indicate it was a sweep? Did they leave a number to call back? So many questions, so few answers. As noted, methods of notification can vary. Usually, the notification method is listed in the rules.
Each morning when I open my eyes I say to myself: I, not events, have the power to make me happy or unhappy today. I can choose which it shall be. Yesterday is dead, tomorrow hasn't arrived yet. I have just one day, today, and I'm going to be happy in it.
- Groucho Marx