1. Choose another verification method to appeal: /acsr
But this complaint exists in name only, and Microsoft will reply every time: the system automatically determines that the information you provide is not enough to verify your ownership of the account.
(But according to my persistent experience, after I failed to appeal for 9 times, Microsoft allowed to update the account security information and bind a mobile phone number. Overwrite the previous security information (that is, the QQ mailbox previously bound to your map).
You can try to keep complaining (complain again after Microsoft replies to the email), and then you should be able to update the account security information.
2. Call Microsoft Customer Service Center:
Microsoft Customer Service Phone:
Microsoft Customer Service: 1-800-642-7676
Microsoft technical support: 1-800-936-5700
TTY customer service: 1-800-892-5234