I wish I had done this in 2015. I lost the only pictures of my now deceased dog in Google Drive when I was locked out for no reason. Except I didn't regain access because I didn't make a popular Reddit or blog post.
Apparently Google's "customer service" runs as follows:
1. Don't provide any customer service email address.
2. Don't provide any contact form.
3. Don't provide any phone number.
4. Don't respond when people resort to sending snail mail. (Yes really I tried and I'm not the only one).
5. Provide a forum where 999/1000 posts don't get a response.
6. Suddenly respond if it affects public relations. (ea. a popular Reddit post).