Please double check your payment method to make sure that the details are correct. If you are using a credit or debit card, please check that you are using a valid card. Double check carefully the expiry date and if the card is still active. If all seems fine, then we would advise that you check with your card issuer to make sure that there are no problems on your account.
If you used PayPal to make the payment, please kindly contact PayPal to make sure there are no current issues with the PayPal service or your PayPal account: https://www.paypal.com/uk/smarthelp/contact-us
You can also place orders with us over the phone by call us on 0203 012 0065.