Hello,
In February 2026 I was testing the Gemini API through Google AI Studio with a key from the auto-created “Default Gemini Project”. I believed I was on the free tier and was not aware billing was enabled on that key. This resulted in a one-time charge of €57.44 + VAT (€70.65 total), mostly Gemini 3 Pro input tokens. There has been no usage since.
My card on file had been closed, so the payment failed and the billing account was closed. I have now disabled billing on all my projects.
I tried to request a one-time courtesy adjustment through the Cloud Billing support chat, but live support is not available for closed billing accounts, so I have no way to reach a human agent.
Could a Googler please advise whether a one-time courtesy adjustment is possible, or point me to the right channel? I’m happy to share the billing account ID and invoice number privately.
Thank you.