In order to stop the remote support received from the developer, you need to contact them first and let them know about your decision. In this matter, you can use the official website. After you did this, you need to uninstall this product from your computer. Regarding your OS, this can be done by going to Start > Control Panel > Programs and features (for Windows 7) / Add/Remove Programs (for Windows XP) select the program and hit the Uninstall button.
