Hi Courtney,
I’m sorry to hear you’ve experienced difficulties.
To start with the deletion of events … this is actually the expected behaviour. When an event disappears from an iCal feed (and Google Calendar imports are just that), there’s actually not a really great and safe way for us to detect that a deletion took place.
On the other hand, your experience with changes not being pulled in doesn’t sound right. Are you able to share (by private reply if you prefer) some examples of any events that haven’t been updated on your site, along with the Google Calendar feed URL?
Thanks!