On the rare occasion this happens, please contact our customer service for help and further information.

We suggest trying the PayPal option (even if you do not have a PayPal account) this will then open 2 options.
Log in to your PayPal account or select the credit and debit card payment option and this will then enable you to use the PayPal portal for a secure payment. This is available even if you do not have a PayPal account.