Either HN bias towards google is making sure these posts hit front page frequently (frequent enough for me to notice at least) or certain tiers of customers are treated differently.
https://cloud.google.com/contact
It may not be the right human, but it will be a human you get in touch with.
Basic billing support (including account suspensions etc) is available to all GCP users for free via ticket, chat or phone.
30 000 random bans per year without justification are entirely consistent with Google Cloud revenue in billions.
In similar way as people keep doing things despite (sometimes tiny!) potential for death, mutilation or bankruptcy.