I purchased the dining out Denver passbook. I was...

I purchased the dining out Denver passbook. I was sent a confirmation email of my purchase with instructions on how to redeem my passbook, but the email was missing my redemption code. I have tried to contact diningOut 3 times to get my redemption code and get my passbook and no one is contacting me back. Please contact me back with this info as soon as possible so I can obtain my passbook.