Which Way Did it Go, George?

Customer: How do you place an order online?
Me: You find the phone model you're looking for, click add to cart and then select checkout.
Customer: This phones doesn;t have an "Add to Cart" button.
Me: Oh? Then it might be out of stock [side note: this happens sometimes]. Which model is it?
Customer: The Palm Cetro 690

[I looked up the model on the website]

Me: This item is in stock. I just clicked on the page, and there's the big, green "Add to Cart" button, right under the price.
Customer: I don't see it!
Me: What browser are you using, IE?
Customer: NO, mozilla firefox.
Me: That's weird, I'm using Firefox too... and I see the button.
Customer: well, it's not here on mine!
Me: Perhaps you might try refreshing your page.
Customer: Huh? How do I do that?
Me:...
Customer: oh! I got it! THERE it is! Thanks for your help!


*****

At least this one had the grace to sound embarrased.