>Available to G Suite administrators only. Log in to your admin account for verification.
If an account is banned, how would they log in to their admin account?
I have nothing to do with OP, don't know who they are, etc... Just curious how this would work when you don't display their phone number until they log in, and their login credentials might not work. Same for email and chat, according to the text of the page you linked (https://gsuite.google.com/support/).
Yet you mention these as ways to get support. Am I missing something?