If you are not happy with your current Orkut account and willing to delete it. Then follow this guide to delete your Orkut account permanently.
1. Log in to your Orkut account and then Go to Google.com
2. On Google.com click Setting present at top right corner of the screen and from pop down menu select Google Account settings.
3. In next page click Edit next to My Products.
4. On next Page click Remove Orkut Permanently.
5. Follow the Instructions on the Last page and delete your account orkut account.