Adilmoosa,
Have you considered PHP Coin?
The phpCOIN package can assist you in the following:
Site Content- create and manage site information for easy display for potential and existing clients. The content is searchable with the "Search" module.
Order Process- provide a configurable of forms for collecting client information during order process, and provide a single "paylink" at the end of the process to direct the client to third party billing. Search orders feature available.
Invoices- provide a method of invoicing clients for orders / services in either a one-shot invoice, or as a recurring invoice. Search invoices / transactions feature available.
Client Managment- keep client information profile, order history, invoice / payment history, support helpdesk ticket history. Search clients feature available.
Support- provide an integrated support helpdesk trouble ticket system. Search trouble tickets feature available.
Contact- provide a means for clients to contact you (ticket system or contact forms) and for the admin to contact the clients.
Get details here:
http://phpcoin.com
