Hi Lawrence, a few points:
First, I agree that it is odd that the billing team would ask you to come to the App Engine mailing list about a problem with Cloud SQL. Thank you for sharing your billing case number so that we can figure out what went wrong.
Second, I should explain our community support model:
- We (Cloud Platform Support) monitor this and several other mailing lists (including one for Cloud SQL) in order to provide help to as many people as possible. Our activity on these forums leans toward providing advice and pointing folks in the right direction.
- We also keep an eye out for people who have slipped through our normal support channels
- We monitor this mailing list only during North American business hours. And since I wrote the automation in question, I feel okay disclosing that the script which alerts us to new mailing list threads doesn't trigger on keywords in the thread.
- In parallel with our community support activities, we offer paid support contracts which carry an SLA around initial response time for critical issues. Depending on the nature of your business the cost of a support contract may be appropriate.
For you, the right direction seems (from what you've stated) to be the billing team. It also seems like your existing billing case wasn't handled well, and it's completely appropriate to escalate here.
Lastly, back to your original problem of the stuck Cloud SQL instance. I see that you opened
issuetracker.google.com/issues/36290200. This is the right approach when you suspect a bug (as this might be, given how long ago you re-enabled billing), but we will need more information such as the instance that is stuck.