If you are a Bronze/Silver/Gold customer, start by going to pro.lookup.whitepages.com and logging in.
On the main page click on the 'My Account' drop-down and click 'Account Settings':
On the details page, click on either the 'Billing' button. Once on the 'Billing' page, you will see your current payment method under 'Payment Method'. Under this, you will need to click on the 'Change payment method' link:
From there you will end up in the 'Change Payment Info' section where you will see the form that you will need to fill out to enter a new method of payment.
Your payment info must include cardholder name, credit card number, expiration date, cvv, and zip code. Then click on the 'Update Payment Info' button and your payment info will be automatically updated:
If you have trouble with these instructions, you can place a New Request.
If you are an Enterprise customer, please refer to your invoice for contact information.