Air Canada from EWR to Calgary, stopover in Toronto. 15 minute delay, they bumped my wife from the flight, and made her fly the next day, said it was customs fault, didn't offer any compensation. What can I do? Can I prove they really did it because the flight was overbooked? Is it their fault there was only a 1 and a half hour stopover? She made it to the gate 20 minutes before takeoff, but they cancelled her flight in advance, saying there was no way her luggage could make it.