Hi neel_psl,
You can delete users permanently by using the 'Close Account'option in the Admin -> Users -> Edit Users. Search for the user and click 'Close Account'. This feature needs to be enabled by raising a support ticket with Lithium, if it is not already enabled.
You can then create users using the 'Create User'option in Admin or via API - https://community.lithium.com/t5/Developer-Documentation/bd-p/dev-doc-portal?section=commv1&leaf-id=Community.users.add#
Is there any API to close/delete group of users all together at once??
