How to remove your 99designs account
According to 99Designs –
Deleting an account is permanent.
If you’re not ready to delete your account, you can choose to withdraw your designs and unsubscribe from any notifications on the Settings page in your account.
You may also call 99 designs at 800-513-1678 and request account removal.
Helpful Trick: Removing online data
Helpful Trick: Remove third-party logins
If you signed up for 99designs using a third-party login such as Facebook or Twitter, you probably want to revoke all access from 99designs. Click here to find out how.