CCBILL for Joomla

Hi I will be running Joomla for an adult site, I need a link back to CCBIL. Basically I want the user to be able to click on a preselected either trial or full membership button, be directed to CCBILL for processing. Then if approved for a new user account to be added into the joomla users to access protected content. I also need the script to be able to link to CCBIL to advise of canellations and automatically disable user accounts. Just using the standard Joomla users database. Thanks!