I was frustrated over never getting a code either, and this will be our 3rd trip in 3 years (staying deluxe). I played all the games too, ordered the DVD, used multiple addresses, called weekly to see if there was a rate under our names, etc.
I also did the same for my parents who will be going with us, and haven't been to Disney in 26 years. And guess what? My mom got a 20% off code (via email) a few days ago. AND it was for the dates we're going, AND there was availability for the code at the Poly, so I was able to apply it to our ressie, saving me $450!
I too felt like Charlie when my mom handed me a printed out email with Disney characters on it and said, "this isn't what you're hoping for, is it?" I scanned through the email and towards the end, there it was, the words PIN CODE with a number. YIPEE!!!!!
So don't give up hope...it can happen!
I also did the same for my parents who will be going with us, and haven't been to Disney in 26 years. And guess what? My mom got a 20% off code (via email) a few days ago. AND it was for the dates we're going, AND there was availability for the code at the Poly, so I was able to apply it to our ressie, saving me $450!

So don't give up hope...it can happen!