I think there is a clear point of contact, and it is your registrar. This is part of the reason a hierarchy of registrars exist, rather than each TLD just being one organization maintaining its own registry service: so that the people with ultimate authority (the TLD, in this case) can have personal relationships with representatives of “constituencies” of domains (the registrars), rather than necessarily-impersonal relationships with a flat collective of millions of individual accounts (the domain owners).
By analogy: Google has necessarily-impersonal relationships with millions of Gmail users; but rather more personal relationships with far fewer GSuite and Google Cloud organization owners. If you were an employee of a company that uses either of those, and your service was breaking, you’d ask your GSuite organization-owner (i.e. the person Google has a personal relationship with) to contact them for you.
By analogy: Google has necessarily-impersonal relationships with millions of Gmail users; but rather more personal relationships with far fewer GSuite and Google Cloud organization owners. If you were an employee of a company that uses either of those, and your service was breaking, you’d ask your GSuite organization-owner (i.e. the person Google has a personal relationship with) to contact them for you.