This afternoon, I noticed that one of my Google Calendars had utterly vanished. I tried all the troubleshooting steps available in their help forum, but it was still gone. I was concerned that I wouldn’t be able to get any real help, based on some of the posts in the forum, but I sent them a note anyway:

I had a calendar named TRCC that is for my church. Today I was logged into
to Google Calendars, and was unable to enter events. I logged out and in
(and cleared cache and cookies), and when I logged back in, the calendar
had vanished altogether. It’s no longer displayed in my Google Calendar
interface, and the page where it is embedded throws an error too:
http://3riv.org/calendar (“Invalid calendar id:
5nuaouifu4j7ndhiunae5mmu3s@group.calendar.google.com“)

It’s showing every sign of being gone altogether, though I certainly didn’t
delete it. 🙁

By the time I made it home, this was waiting in my inbox:

Hi Sean,

Thank you for your note. We’re sorry to hear that you’ve experienced the loss of your calendar’s data. We have reviewed your account, and noted that the calendar ‘TRCC’ had been deleted. Please be assured that we will never delete your calendar data. Your calendar may have been deleted by someone else who had ownership access to this calendar.

We have gone ahead and restored this calendar, and it should now appear in your calendar list. Please keep in mind that you can keep a backup of your events by exporting your calendar data. To do so, follow the instructions at http://www.google.com/support/calendar/bin/answer.py?answer=37111

Regards,
The Google Team

Sure enough, the Calendar is back intact. Thank you, Google Folk! You have impressed me once again.