You can try, first of all, antivirus, especially killing Trojans; Secondly, the official download the full version of the installation package for installation; This will prevent such a thing from happening again. Finally, find three friends who often contact as soon as possible to help complain. There will be a reply after 4 hours, and there will be a sense of accomplishment if you succeed. QQ official "Help" has a detailed description of the appeal process.