ORIGINAL: I recently found a charge from Google Cloud on my credit card statement (small charge ~$20) that I didn't recognize. Asked friends + family, no one has used my card. Checked GCP and firebase, no usage or charges. I filed a report here (https://payments.google.com/payments/u/0/unauthorizedtransactions#)

And they closed my case stating that it was not an unauthorized charge without stating what the charge was for. Since the case is closed, I have no way to contact them. At this point, I would usually just chargeback the company, but it's Google. I've heard of Amazon shutting off access to their entire platform and products over disputes/chargebacks and I can't afford to do with Google since I have emails and such going back ~15 years.

What would you do in this situation?

UPDATE: I submitted the form again (shortly after my post here) with the same CC charge ID asking for more info, and they closed my case again. I checked my CC statement today and found a new ~$30 charge. But again, I literally checked all my GCP accounts and I can't find any usage anywhere. At this point, should I just cancel my card and chargeback? I'm still scared of retaliation by Google, but I'm also now fearing the possibility that my card's been compromised and I should act instead of counting on receiving a response from Google.