Undetectable AWS billing errors causing catastrophic false charges with no recourse

Users face mysterious, massive AWS billing charges (sometimes in the billions) for services they never used or actively disabled, with no clear way to identify the root cause, no timely AWS support response, and no mechanism to prevent or automatically detect such errors before they accumulate. Current AWS monitoring tools fail to catch systemic metering errors, and support channels are too slow to help users in crisis situations where they're being charged thousands per day for phantom usage.