I can usually get even a very hairy ticket resolved on AWS in a manner of hours, every gcloud ticket we open takes days. Sure the respond in 24 hours but it's usually just a response that says "We'll get back to you eventually". If google actually wants to compete in cloud services they need to step up their game.
If I had to rate them, I'd say Microsoft has by far the best support, followed by Amazon, and Google's is (almost?) non-existent.
-your favorite google tech support (NONE!)