Delete my account

in the age of cloud computing you cannot delete accounts as they are stored on the xbox live servers

you can however rename your gamertag then relink the gamertag

if you read the bungie.net faq on relinking changed gamertags

YOU can delete YOUR account at anytime. Choose NOT to use the account........ A call to support may also help...... GOOD LUCK!!!

You can also pay the 800 Points charge to change your gamertag on this profile, freeing up the name to be used on another profile. (So no, you can't delete your current profile, but you can change both the Live ID and the gamertag and re-use those
on another profile.)

Banning accounts and deleting accounts are different things. Even banned accounts aren't deleted from the servers.

Yes you would have to pay to change it.