support on demand WP plugin

wordpress

#1

Hi,
I’m looking for a “support on demand” plugin. So where people can buy credit and work off that with the support operator of their choice etc. with a good ticketing system, live chat and pricing setup.

for example ladesk.com (not a WP plugin though) has a good ticketing system, but comes without charging system.

How has a hint where to look, or how to assembly with different WP plugins ?

Regards,
Frank