If you purchase Google production support, with credits or otherwise, it's available 24/7 and not tied to a single "contact person". In addition, billing support (which includes things like being suspended for fraud or abuse) is free, available to all and also 24/7. All these channels are responded to by real live humans who can see what "the algorithm" did and why, and overrule it if need.
Disclaimer: I work at GCP and used to work in support.