Deleting your Box.com account should be easy (https://support.box.com/entries/20364528-How-do-I-cancel-my-account-):
1. Sign into your Box.net account
2. Personal Accounts- Select ?Account Settings? from the “My Account” dropdown and choose the ‘Account Info’ or ‘Account and Billing’ tab
3. Commercial Accounts- From the ‘Admin Console’ select ‘Admin Settings’ then the ‘Account and Billing’ tab.
4. Select ‘Delete your account (This action is permanent)’ from Account Information section.
5. In this new page, you will be given directions on how to proceed with your cancellation.
URLS:
http://www.box.com
Please note that AccountKiller.com is not associated with the business listed on this page. AccountKiller provides easy-to-understand instructions and guides on how to cancel charges and relationships from the list of businesses on our site, we have no affiliation with these businesses.