bot issue with no role and cant be banned

So i created a discord server, invited a few bots, and then decided to kick them, 3/4 where kicked successfully. One however named "notsobot" has no role and prevented me form leaving the server or deleting it as there's no "Leave Server" button or "Delete Server". Also my owner role has been deleted and now i can't kick nor ban the bot because discord says "Uknown User" when i assign a role to it. Any ideas? Help would be appreciated!

Edit: the bot is still in my server when i kick it