A support case was created for you and you should be contacted shortly by a Customer Support Representative, if you haven't been already. You can view and update your case at the Activision Support website. After logging in, go to "My Support" then "My Cases".
Check your connectivity setup for the game. To check your connectivity in game, go to Multiplayer, select Options and press the back button on your controller.
Check on your connectivity info, nat type, connection, and also bandwidth.
If there are some dashes for conn. info and and moderate or strict nat type, or bandwidth may be a bit low, you may need to contact your internet provider for portforwarding. Here's a link to help you out: http://support.activision.com/articles/en_US/FAQ/How-does-matchmaking-work-in-Pu blic-Match/