Flair Airlines complaint: Cancelled my flight for no reason

I booked 4 tickets for Calgary to Vancouver via Flighthub with Flair Airline on Feb 17-2022. On March 18th flair canceled one leg of my flight from Calgary to Vancouver. When I called they said there was no reason and they re-booked me back on the same flight. The trip was for July 21st to 29th.
On July 5th, I got an email for my itinerary showing some debit credit and also asking to check-in. Since it was too early I left for later to do.
The day before our flight, I tried to check in but I was not able. I got hold of Flair agent and they said they are updating their software and we should check in at the airport. At midnight that day, I was not comfortable with not checking in. I got hold of another agent via chat and she the same thing about their software update. Then I asked if she can add my luggage to my trip when she tried to do that she found out that my flight has been canceled!!! They didn’t tell me why. I can’t get hold of them. I had to re-book our 4 tickets the same day for the same flight that I booked in Feb 2022, for 5 times more as we had to attend a family wedding the next day. I was not able to re-book the same flight return as the price was so high. we had to cut our trip short to come back. I paid for a car rental, Airbnb up to July 29th based on my first booking and other extra costs.