The best information I can find is that a man named Jim Rogers is President and CEO of KOA, Inc. The email address I have for Mr. Rogers is:
jrogers@koa.net
Because I am stubborn, I would call KOA headquarters in Billings to determine whether Mr. Rogers is still "the boss" and whether the email address above is accurate. If he is (and it is), I would forward the entire story - including the response you received from his HR person - to Mr Rogers (or whomever is currently the CEO) along with the fact that your "KOA story" has been and continues to be widely discussed on the internet. If you get the same response from Rogers that you got from his staff flunky (or no response), then we know a great deal more about the sort of corporation that KOA REALLY is. Companies that are un-responsive to customers' complaints typically pay a high price. If Mr. Rogers is smart enough to be CEO of KOA, he ought to know that.
Bill