well, they finally responded. Here is what I got today:
Greetings from Amazon.com.
As promised I have contacted our marketing department regarding the
$100 Pizza Hut Gift Certificate Offer.
Unfortunately none of the coupon books have been mailed yet. Please
note our marketing team expects to have them all sent by the
beginning of next week.
I apologize for any inconvenience this delay may have caused you.
Thank you for shopping at Amazon.com.
Best regards,
Tamara H.
http://www.amazon.com