For security, we are unable to update any card details over the phone.
Each time a payment is collected we will email you confirmation. In this confirmation is a link as shown:
Then select Update Card and enter your new card details:
Your card details will be updated and all future payments will be collected from your new card.
If you do not have / cannot find an email with the "View and Manage this Payment" link, please submit a ticket and we'll send you a personalised link.