Following up on closed billing bug thread: Cloud Support refused 100% refund for Case #62468292, capped adjustment at 90%

To provide additional context on how long this issue has persisted:

I have previously posted multiple times regarding this exact incident in the original thread (Gemini API cost suddenly skyrocketed - #48 by NeroAmy). Unfortunately, I did not receive direct assistance or follow-up from the Google AI Team on the forum at that time.

Because of the lack of resolution here, I was forced into an extensive, exhausting email exchange with Google Cloud Support. This billing dispute has now dragged on for nearly a full year without a proper resolution.

The tipping point is that Support continues to outright refuse the remaining 10% adjustment while providing zero technical evidence, logs, or clear reasons for their determination. Instead, they repeatedly hide behind vague statements claiming it is a “firm internal decision.”

It is deeply concerning and frustrating to see a company of Google’s scale operate with such non-transparent processes, evading basic customer accountability for a vendor-side infrastructure bug.

To the community: Has anyone else encountered this kind of brick wall and lack of transparency with Google Cloud / Billing Support regarding acknowledged platform bugs? If you managed to get a fair resolution or escalate past the Tier 1 automated responses, how did you resolve it?

Any insights or advice would be greatly appreciated.