According to the official web page, a survey could last several years. Contact ClickStream Technologies before to uninstall the software from your computer.
In order to remove the application, use Revo Uninstaller. Even if it can't uninstall the application normally, it will force it to uninstall by wiping out all traces of its presence from the system.
After that, try running AdwCleaner to make sure that there are no leftover rogue registry keys or toolbars in your system.
