We are sorry to hear about this!
Here are a few things that could help.
1) Close the website and clear your browser history. After that try to place the order again. If you are not sure how to clear your browser history this link should help.
2) If you still experience trouble after you cleared your history, you can try placing your order in a different browser.
3) If none of the above work, please contact Customer Support - it will be very useful if you provide us with this information: your details, your order number (if you saw it displayed at checkout), the device and browser used when you were trying to place the order, and any kind of error message that was displayed.