If you spend that much money on ads you should be a Google Ad partner, and you usually get to have a dedicated, on-call support agent directly from Google. We

If you spend that much money on ads you should be a Google Ad partner, and you usually get to have a dedicated, on-call support agent directly from Google. We had a similar situation arise once (big marketing agency in EU), up to that day I've never had heard anyone screaming so loud at someone than my boss to whatever poor soul was assigned to us by Google.