You may wish to check a few things on your system that could be causing the error.
1. If you have anti-popup software installed on your system or in your browser, this may prevent the booking from being completed or from any confirmation of purchase, our website displays. We recommend that you allow pop-ups when using our site.
2. In order to book on our website, you must have your system set to accept all cookies. Adjust this browser setting by going to Internet Options in the Tools menu. Click on the Privacy tab and ensure that slider is set to Medium or lower.
3. You may receive an error message when our system declines your credit card. This may be because you entered the number or expiry date incorrectly, or there were insufficient funds available. Please check this with your bank or financial institution.
If none of these solutions allows you to complete the booking, try making the booking using a different web browser of if possible another computer.