Deleteed Banned usergroup

[SoniaTel]

I have by mistake deleted Banned user group .. even though later I created the Banned users group .. but it does not take effect .. whereas when i try to delete any spam post and want to ban user .. when i try to delete posts as spam and want to ban user but in spam management no ban option comes .. it happens only after deleting banned user group .. how can i rectify it .. please help