When you disconnect a Yahoo!-ready USB phone from your PC running Messenger, you will see a notification that reads, 'The USB phone has been disconnected from Messenger'.
Where's the Contact Customer Care button? With so many improvements to Messenger since the version you're using (lots more features and reliability), we figured you're ready to move up. So get your upgrade and with the new version, rest assured if you have questions, you’ll find that friendly button on its help pages.