I guess they're now so understaffed that this is the norm. Pretty sad. I guess this is a lesson for everyone to keep an eye on their flight times with Air Canada and not to rely on them to contact you.
It was interesting talking with one of the AC staff on the phone while rescheduling our flight. She was quite vocal about being fed up with the company herself and said that many of the customers she's spoked with will never book on Air Canada again due to shabby treatment.