i've tried contacting the admin asking them to delete my account but i check and it's still here. HOW DO I DEACTIVATE MY ACCOUNT??

Administrators don't delete usernames anymore, because it messes up CB4's database. If you don't want to use your account, simply don't sign in from now on.

will it simply close in some time???

because I want to close my account so certain people would not find me from here

Delete all the personal information from your profile? Admins can delete all your topics/posts

In the future the owner of createblog has expressed that it will be an option for users to remove their registration from createblog via the "My Controls" panel. However, at this time that is currently not an option.