What's the printout from? Just off the screen when you think you placed the order? Strange.
Ordering from 3rd party is fine. Fabulous deals. Once in a blue moon there's an issue, but if you don't receive the book, Amazon will refund your money.
I haven't bought 3rd party in a while as I have Amazon Prime, but I'm pretty sure I still always got an immediate email confirmation.
Is there an order number on your print out?