With this plugin, you can manage a simple support ticket system on your WordPress.
Support Tickets is a WordPress plugin which allows you to create and manage a simple support ticket system or helpdesk system on your WordPress. If you are offering a support service and are looking for a simple tool to help you with that, Support Tickets is an excellent choice. I'm using this for my customization service for Contact Form 7, as well.
I've developed the Support Tickets plugin based on my Contact Form 7 plugin, so there are similarities. If you are familiar with Contact Form 7, you'll be comfortable with Support Tickets very soon.
You will have the ability to make a "multilingual support ticket system" with this plugin. This plugin allows you to write messages in your language and ask a professional translator to translate your message to another user's language. This feature utilize the WPML plugin, so you need to install the plugin beforehand.