So after reading a few other posts on the board, I didn't have much hope that I'd get anywhere on the phone. However, I got a very helpful CM who helped me figure out what info the PIN was under. It was under my old last name (last used over 3 years ago), and even more odd, attached to my ex's current address, which I've never lived at (he bought the house years after we broke up). The CM updated the info attached to the PIN offer in the hopes that future offers will come under my current info. She also created a new entry in their "guest book" for me thinking that could trigger new PIN offers as well.
Also, my current last name is only 2 letters, and she said they can't search on names that short. So, even if future PIN offers come attached to my current info, I'll probably never be able to book online.
Just FYI for anyone else searching for a solution to this problem in the future.