I ordered a converter box from Amazon.com. I submitted the information from my coupon card. After the order was submitted, I received an E-Mail from Amazon that my coupon was rejected and I should contact the FFC with numbers on card. I called the phone number to learn it is just for ordering coupons. The FCC web site is no help. How can I use the coupon (which had not been used previously and expires 1-1-08) to get my $40 ?