How can you reach Amadeus on behalf of American Airlines?

I made a reservation on a website following a link from an online search engine and I honestly believe it was American Airlines -- the link sent me to i11l-services.aa.com which redirects to bookaa.amadeus.com and then to www.amadeus.com and there was a huge American Airlines logo on the page and the right header and footer. I know what Amadeus is and I was not concerned on being the wrong website. But, this registration was a mistake and wanted to cancel it real quick. Here are the known facts:

1. I got an email from American_Airlines@aa.com saying "Your trip is confirmed and your confirmation number is ... Please note this is not your itinerary and receipt confirmation. An electronic ticket containing flight details and receipt for payment will follow shortly. In the meantime if you would like to add extra options to your trip such as seat assignments and special services please visit 'Manage My Trip' on your local website. Thank you for visiting AA.com®." There is nothing else, no contact information. The confirmation number is a normal six digits-and-letters PNR followed by a five character long also digits-and-letters. I have no idea what the latter is.
2. The first flight is with British Airways.
3. www.ba.com sees this reservation using the six charcter PNR but www.aa.com does not.
4. I called American Airlines on 800-433-7300 who said their reservation numbers are six letters and do not contain numbers. Mine do. They can't find this reservation at all. They suggested calling my credit company because the charge would contain the 13 digits ticket number.
5. My credit company says there's not even an authorization, much less a charge. (well I guess they will charge when there is a ticket)
6. British Airways customer service says they see the reservation but not the ticket and that American Airlines made the reservation so they do not have the authorization to cancel
7. Called the same number again at AA and got to the exact same nowhere.
8. American_Airlines@aa.com is not a functioning email address. Surprised by this, I checked the original email and it seems to come from mail3.amadeus.net -- but there is also an SPF failure. Googling this email address finds my crosspost to flyertalk and also a Japanese AA FAQ. The Internet Archive has this page archived for five plus years. So at least at some point in time this probably was a functioning email address.

So how do I find who made this reservation and how do I talk to them?