Alan, you said that is your response.
Did you email that to costco?
I had thought that my post was clear on this point. Seemingly it wasn't. If you take another look at my post, you will note the saluation Gentlemen.
Starting at that point, and carrying on to the last word is what I e-mailed to Costco, at the e-mail address shown on their response to another correspondent.
I've not had anything in reply, nor do I expect anything in the way of a reply. As a rule, these corporations and or large business establishments do not take all that kindly to questions from The Great Unwashed, though they will stoop to taking our money, as much thereof as they can get their hands on. Criticism and or questions regarding their policies or operational methods are most often, another thing entirely.