E-mail support is only for "select administrative issues", and phone support is only for reporting "a service unusable issue caused by a Google server error"[1].
It doesn't sound like the GP's issue would fall into either of those categories.
Exactly. I'm not paying for the service so I can't really complain, but when many users report a bug in 2009, where Google Calendar completely chokes and can't delete or modify meeting requests with more than a handful of recipients, you would expect a company like Google to at least reply "we've opened a bug and are working on fixing this issue."
Instead, the silence on their troubleshooting forums is deafening. It's as if the engineers just don't care about fixing it, despite what would happen in the real world if a Google Apps sales rep came to our company to do a real evaluation... I suspect they would be laughed out of the room once they admitted they couldn't handle meeting invites with more than a handful of attendees.
It doesn't sound like the GP's issue would fall into either of those categories.
[1]: http://www.google.com/support/a/bin/answer.py?hl=en&answ...