WORST AIRLINE. NEVER EVER BOOK ANY TICKET.

WORST AIRLINE. NEVER EVER BOOK ANY TICKET.
Due to COVID, my flight was canceled, so they email me stating I have a credit to rebook any flight using Air Canada/ Air India till March 2021. So I wanted to book a new ticket using my credit from Montreal to Calgary. I have called them at least 20 times no proper response even after waiting in a queue for 2 hours. I have sent them an email but no response. Multiple times I have asked them to connect my call to a supervisor but no response they will just put your call on hold for another two hours. I badly want to book my flight but I am pretty sure that my money is gone.