To update or change your credit card information, login to your account at my.magicJack.com. Hover over the Account tab and select Manage Payment Information.To update:Select the 'Update' button to the right of the credit card you wish to update. Here you can update the address and expiration date informationTo add a new card:Select 'Add a Credit Card' button.To remove an existing card:Once a new card has been added and any auto renew subscriptions updated to the new card, you will then see the option to delete the old card.