AWS support is atrocious, unless you cozy up to them somehow to get special treatment. If you are a "regular" customer, you get zilch. AWS offers best performance for the best price, that and they are the largest service provider is what makes them succeed. They don't need to spend anything on support -- it's not cost effective.
My personal experience: we provided a service through AWS marketplace related to storage. So, we are not your "regular" customer, had to pay them some for accreditation... and here's the thing: it's probably something about how we create EBS snapshots, but about every thousand or so snapshots creation stalls. Doesn't fail, doesn't succeed, just hangs forever. There's nobody to talk to in AWS about this. People who "certified" us (what a joke...) cannot do anything about this problem.
And there's more stuff like that. Sometimes some resources won't delete first 1-2-3 times you try. Some other resources are created, but don't work once in a blue moon. And all you can do about it is just curse and try again.