The easiest way of dealing with Google is to just cancel your credit card... You won't get your money back (unless a CC dispute gets it back). Google are impossible to get any customer service from, which is why I refuse to use any of their non-free offerings (and have limited my use of their free stuff to hangouts and google docs).
Take them to small claims court, if you have a legitimate grievance. In most jurisdictions a lawyer cannot represent a defendant. At best it will get them moving. It will be sure to at least make them take notice, even if you you have at least costed them and made them account for your grievance.
edit: Meant, even if you lose you have cost them significantly an that has the intended effect of signaling they should improve customer service.
If it was the only way to recover several thousand dollars that they stuck me with I'd absolutely do it, and make sure to do a couple orders magnitude more damage to them with widespread recommendation of AWS, Azure, Linode and basically anyone but Google. It'll catch up to them eventually.
Does that matter if every Google service is run like the one in the article? That sounds a bit like saying you'll ruin any potential friendship you could have if you fought back against a bully
