Don't do anything until you provide us more specific details on what happened. There's a thread of common errors and instructions on making a complaint. "plz help" doesn't do much to help us pinpoint your problem
Do you mean you press the "play" button on the ingame menu? This button is for automatch. It will probably not be able to find you a game if you do it in EF since nobody else plays auto. Host your own game in the lobby.