For the only Google service I pay for (Project Fi), customer service is stellar.
They gave me $50 off a month's bill at the end of all of it but it was such a frustrating ordeal. You couldn't pay me $500 to do it all over again. Their customer service is a joke. After spending time on their product support forums, I was far from alone.
[1] http://www.netinstructions.com/what-the-heck-google-my-proje...
Good luck getting your blocked GMail unblocked if you weren't lucky enough to have the blog post detailing your story go viral.