I never Received a receipt
A receipt showing amount paid and departure information is automatically emailed to you upon completion of payment.
Follow instructions here.
Watching the video below may help
(or ask questions below using buttons)
If you THINK you finished making a reservation, by clicking "Pay", did you wait until it completed and you saw an image like THIS telling you to "continue"?
If not, there were likely errors (or missing information) in the payment processing form that needed correcting before continuing.
Check to see if your card (or other payment) was charged