The biggest grudge I have against Google is that their support is absolutely terrible. I have been unable to use AdWords for over half a decade; I have been unable to create a blog at Blogspot for a few weeks now. Their support is useless, the help pages are often irrelevant and lead to dead or equally irrelevant pages, and it seems impossible to get a human support agent to actually talk to.
The up shot? When I run into some kind of problem, that's a Google service I can no longer use.