What was your route ? I don't think a airline can book a connecting ticket that short. They would have probably booked you on the next flight. Are you able to access the modified booking.
Otherwise the only recourse is the following
If you currently have a reservation, it is possible for you to make voluntary changes to your itinerary if:
- You purchased an Air Canada ticket no later than March 14, 2019 for travel from March 15 to March 31st, 2019
- Your itinerary includes flight AC42 or AC43, between Toronto Pearson International Airport (YYZ) and Indira Gandhi International Airport (DEL)
If you are scheduled to travel during the affected period, you may contact
Air Canada Reservations (1-888-247-2262) to change your flight free of charge, to another date between May 1 and October 31, 2019, subject to availability in the cabin you originally purchased. Otherwise, any fare difference will apply.