When changing the mobile phone number and email address, just click the cancel application and then click the confirm button. After confirmation, the cancellation is successful, and there will be no prompt email.
Extended data:
How to prevent QQ mailbox from being stolen;
1. If you want to avoid QQ being stolen, you must improve the security level of QQ. First log in to QQ and check the security level. Open the security center and you will see what your security level is.
2. Set the "security question" and bind the mobile phone number, and the security level can reach 90 points. If "Security Question" is not set and the mobile phone number is not bound, it is recommended to do these two operations immediately. In the upper right corner of the webpage, it is "My Secret Protection Tool".
3. Open "View All" above, and then follow the prompts for secret protection and mobile phone number binding. In addition, you can download the "QQ mobile phone token" dynamic protection password.
How to retrieve the stolen QQ mailbox;
Prompt questions/answers through birthdays and passwords, and appeal to QQ mailbox through related mobile phones. If the password cannot be retrieved through the above methods, you should contact the customer service of the mailbox provider immediately.