You should still go to the Consumerist. But check to see if there is an Executive Carpet Bomb you can do first.
The info is here:
http://consumerist.com/consumer/exec...ice-220820.php
Have your ducks in a row. If you've got some big items (and I imagine amazon uses some sort of formula based on the prices of things) that you've returned - explain them well in this letter, but tersely. Look around consumerist for how to write such a letter (or make such a call.)
If that fails, then go through the Consumerist itself. The Kindle angle will probably get their attention, and more to the point it will be an individual story and not a whole forum (who may or may not have been trying to game the system.)
Good luck.