The only way to remove an account is to log into it. If you can't log into it you will never be able to remove it. You should contact your platform for support to recover a lost or hacked account. Bungie will never remove a platform account for security reasons. See Bungie's policy below. [quote]Destiny Player Support and Bungie cannot modify or remove accounts linked to Bungie.net profiles. To protect player privacy and data, you must be able to log in to any linked accounts to prove ownership prior to modifying your linked account. If you no longer have access to a linked account, you will need to reach out to the specific platform’s support for assistance with account recovery options. https://help.bungie.net/hc/en-us/articles/360049498031-Destiny-2-Cross-Save-Guide[/quote] Bungie cannot help you. Account security is your responsibility at all times.