If all else fails and your business depends on it, maybe try to get someone with some reach on social media to post about your plight and see if anyone in their network can put you in touch with someone at Google who can direct your issue to someone internally. A LinkedIn post might get it out there as people can tag various Google people (whether they know them or not).
Ultimately people in our community are here for each other, and if someone somewhere has a connection at Google, I wouldn't be surprised if they'd help you connect.
It's a long shot, but if nothing else works in the next day or two, I'd give that a try.