My advice; keep on it. Trying a dealer with a better relationship with Ford...they may get more leeway. I know my own dealer gets a lot more latitude than others because of its customer satisfaction rating.
My dealer with my Escape (Discovery Ford in Burlington, ON) has been awesome. They simply can't fix my tranny problem because I don't think there is a fix (google "Escape Transmission issues")
Ford Canada "customer service" is not helpful. I've got them involved trying to buy my Escape back or provide some sort of trade in allowance but their solution to my troubles is to "buy an extended warranty". I actually think calling them may have made it worse with my dealer, who is now feeling under pressure to fix my problem when I think they are doing their best (they've reprogrammed the tranny twice, and rebuilt it once...still a mess).