Outsourcing Options For all Back Office Operations


I want to out source all front office and backoffice operations - so for chats from website to chats from FB page, taking calls, may be managing orders, if you can point me to right direction as to which companies are the best for outsourcing this ? I have the chat and phone software that will manage sit,e, FB, email, Phone, so all I want is some one ( a live agent) to reply to chats, reply to emails, reply to calls and so on.

Thanks !
Guruprasahd Singh