It is very easy. You can change the payment method associated to your VIA-T mobe® from Pagatelia's online account. Access from a computer to "My Account" and in the main menu select the option "Recharges". Click on the "Add new payment method" button in the "My payment methods" section and follow the steps.

Important: To confirm the change, in the "My payment methods" section select the method you have just added and click on the "Check as default" button.