In my honest and rather cynical opinion. I think apple does have issues with the magsafe's in particularly the ones on the Unibodys, which would explain the lack of response and the 'In que' reply from my apple agent.
I think that you should print out this evidence via a screen shot, call apple and send the screen shots when asked to their hardware department.
My Magsafe adaptor and edge of my laptop was on fire only yesterday so this is something that needs to be taken very seriously.