He complained he didn't get the download. I've sent it to him now. It may of course simply be that he didn't click thru to the thankyou page (it happens), I don't know.
However there is an additional twist:
My inbox contain 2 identical sales notification emails from ClickBank (same receipt number, etc.) for this order
When I logged into ClickBank and look at my sales report, I also see 2 copies of this order (same receipt number, time, etc.)
Is this just a reporting glitch, or has the customer been double billed?
(already opened a ClickBank ticket on this order)