Although I sympathize with the OP, I'm glad this thread proves I'm not the only victim. BA still hasn't notified me that AA canceled the last leg of my trip home in August, though the computer kindly rebooked me on another flight that departs DFW 2 hours before I arrive on my tatl flight.
Jcm900 is right about bizzare autobookings.
Also, tinntub, your mistaken rebooking is hilarious!