Not only did they answer immediately whenever I had even the smallest problem or question: I twice broke my Glass, and each time I'd call the support number to ask for a replacement.
Google's policy was that no matter how you broke it or how many times it happened, they'd replace it free. They'd immediately send a box to return the broken device (prepaid) and a couple days later a brand new Glass would arrive.
Like I said, once upon a time....