@stephanie.chamblee Thank you for your answer I will try that!
But honestly that looks more like a development of the Auth0 platform itself & a workaround than just using it 
Auth0 is basically allowing to create users without authorization so theoretically if someone has a lot of social accounts he can ddos you with the registration requests & then with the workaround you’re suggesting M2M will ddos your api with delete requests.
I know that it’s not going to be easy to execute smth like that & there’s a limit of 10k for Google api too but still all of that doesn’t sound very good.
Imo that functionality is quite basic & should be covered with options selectable from UI & not just by deletion of created users but by preventing their creation in the fist place.