I'm suffering for this now. They just erroneously charged me almost $4,000 out of nowhere because they decided to scan all of old container images for no reason and without notification. I have a support partner and everybody is just passing the buck around, it's super frustrating.
Being at the level where you have an account manager should help. Our technical account manager always said if we ever accidentally rack up a bunch of cloud costs we should at always ask if we can get a refund, and as long as its infrequent there's a good chance to get some credits.