Dear Air Canada: You suck

Dear Air Canada,

I am flying to Calgary today, although now I will be ariving two and a half hours later than I had planned, because even though I was at the airport 45 minutes prior to departure, there was a line and I could not get through the line fast enough and you wouldn't let me on my flight.
I had checked on online yesterday and already had a boarding pass. The only reason I had to stand in that line was to get a luggage tag. But because it took me 15 minutes to get through the line, by the time I arrived at the counter, I was told that the plane was already boarding and that I was fubared.
What??
I checked in online so that I could avoid lines, but then had to stand in a line anyway, which made me too late to board a flight that I checked into yesterday.
WHAT???
She said she would call her manager. I thought he would get my butt fast through and on the plane. Nope. He sat at a computer and looked through a bunch of screens and then said I would be arriving in Calgary at 6:55.
So then a manager was called because I was not happy. I could not understand how myself, and the two people behind me, could not get on a plane that was not scheduled to depart for another 30 minutes, all because we were told we had to be here earlier.
I replied in frustration and said I WAS here at 2:30 and it took me 15 minutes to find a parking spot and walk to the departure desk.  Then he basically said close only counts in horseshoes and it was my fault because I should have allowed for that time. Like I thought it would take 15 minutes to park at the Grande Prairie Airport! IT HAS 4 GATES!! I think I have parked faster at YEG (Edmonton International) than here.
 Rather than filing that plane up with us three passengers who had already checked in online and were standing at the departure counter at 3:01 pm, you flew a plane with three empty seats, then put us on a later flight. To ice the craptastic cake further, because who doesn't love cake frosted with crap, I checked the departures board and saw that my flight actually departed EARLY. By 6 minutes. Which is about twice the time it took me to go through security at 3:10. So I sat at my gate, watched my actual flight leave at 3:24 because someone decided that I was too late to board.

There is a reason people don't like flying Air Canada and that you need government bailouts to keep you afloat, and this is it: because you suck.

Sincerely,

Sarah.

PS - you suck.