The main reasons why you did not receive a confirmation email is:
A wrong email address has been provided (in this case we kindly ask you to contact us by Contact form.Please provide all the information about your booking, so that we could find your reservation).
The confirmation got into the spam box
You did not receive a second email with the details of the driver:
The planning for the next day being made one day in advance between 20:00 and 22:00. During this time you will receive the details of the driver.