I've had good success with Amex by logging into my Amex account, then sending them an email through the secure message center. They've always responded within 24hrs, and have been more than fair in my dealings with them as far as getting points applied instantly, missing credits, etc....

Or pick up the phone and keep calling Amex till you get a CSR that can do what you want.

If all else fails, I can give you a unique ID to use on the applications. (mine )