When you sign up with your CC owner to play in a rival CC v CC match, please contact the other player's wall and send the friend invite.
The fact that you accept the challenge within your own CC and then do nothing about it actually misrepresents your CC as a whole and I'm sure your owner doesn't like his reputation being dragged through the mud......if only in perception.
If you have no intention of initiating contact with whom you are paired, or don't even play that regularly, please in the future, decline your owner's request for players.
It's very frustrating to run into this problem time and time again. It shouldn't be this difficult to arrange a match vs another player that volunteered for the challenge, too.
/rant...........Merry Christmas, all.