I had a customer that said they made a reservation on my website and I did not get it. What's going on with my account.

I checked your account and there is currently an incomplete payment shown submitted today:

If a user closes the browser or didn't settle the payment after being redirected to the Payment Page, this will be logged as an Incomplete Payments. It will only be posted as a valid submission if the user completed the Payment and was able to completely process the transaction.

Here is a bit more information regarding incomplete payments:

http://www.jotform.com/help/564-how-to-view-incomplete-payments-of-your-payment-forms/