The email is maybe not being SEEN. They be getting o many right now, they are not seeing yours requesting a confirmation. OR the emails may be being SPAM filtered and as such yours are actually not even reaching human eyes. Eamil is the very lowest level of human communication.

Leave a voice message, syaing that you are confirming your engagement. You'll be there at a specific time (make it at least one hour before they open their doors to the public. Leave a cell phone number and tell 'em to call you if they need you.

Now - if the guy who said he wanted you is no longer involved, opened his mouth when he shouldn;t have or is otherwise ignoring you - will have to speak up. They think you'll be on their doorstep, expecting to perform. They'l put up or shut up.

Actually it sounds like fun.