as u have all transaction in single platform,
i will build application where u will add all your transaction , u can send them messages, email, and also u can call ,
this will be secure online application.
I m expert web developer, i have seven year of work experience , my expertise are PHP, MYSQL, WORDPRESS,JOOMLA, CODEINGITER, OPEN CART, CUSTOM CMS, CSS,HTML,JQUERY,AJAX AND CSS.
regard
ajmal