You may change or update your credit card information in the PPC SaaS ™ portal yourself..
First, be sure you are logged in to PPC SaaS ™. PPC SaaS's Portal Login is located at: http://www.ppcsaas.com/login.php
Second, If you want to change your credit card information, click on the My Master Account tab on the top of the screen (see below).

Next. On the My Master Account screen, click on the master billing profile subtab and then click on the edit button. You will then be able to update or change the credit card information on file..

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