I have never heard of a case where they wouldn’t give refunds. AWS is competing with the 95% of compute that is not running in the cloud (their own statistics). The last thing they want is a reputation that one mistake will bankrupt a business.
We had spot instances with a mistakenly high bid that incurred thousands overnight when the prices spiked. No refund offered.
I know several other companies that had expensive mistakes without refunds. There's probably a complex decision tree for these issues and I doubt anyone really knows outside of AWS.
> I have never heard of a case where they wouldn’t give refunds.
Really? Working in Southern California a few years ago, refund requests were refused ALL THE TIME. This is why there's a common belief that what you are charged you simply owe them, period.
It may be more progressive now, but let's not be revisionist.