The Indian staff at yyz check in counter were incredibly rude, they were late starting to check people in. When my wife and I went to the Indian gentleman at our counter he was immediately rude and almost hostile. He didn't want to check in my overweight bag saying that it was overweight. We told him this was a connection flight and we had actually already paid for the extra weight and which point he said.

"You are stupid? That bag is overweight"
We were actually shocked to silence by this. At which point he stared at us blankly. We then told him we didn't appreciate how rude he was being. He then leaned across to the agent next to him all while staring daggers at me and said "you deal with this" while handing him our tags.
1 scan and 2 clicks later and the other agent confirmed that we were right and he was wrong. We won't be using air canada for any flights in the future if we can avoid it. .maybe train your staff instead of hiring trudeaus new canadians who have 0 respect, and not a single bone of good customer service in their bodies.

Check-in at Hong Kong Airport. When we came in, there was a long queue in front of the service counter. After waiting for more than 30 minutes, it was finally our turn, but the service lady insisted that she could only handle baggage check-in, not paper ticket printing services, and asked us to come to another queue next to it requesting. In fact, the waitress next to us had a long queue and the counter staff was training new people at that time. They work on each case for more than 10 minutes for a family. Finally they sent us back to the lady who had refused to print the tickets for us before to complete the paperwork. This wasted at least 40 minutes of our time. This was the worst experience in our travel history. Air Canada Hong Kong Airport, work efficiency is extremely poor and service staff are extremely unfriendly．

"I recently flew on Air Canada flight AC1823 from Puerto Plata to Montreal, and I had an experience that truly impressed me. The passengers seated behind us were drinking alcohol, talking loudly, and even pushing and bumping into my seat while chatting. When I looked back, they even started to provoke me. My husband and I tolerated this for about an hour and a half, but they didn’t stop. Realizing that it was best not to engage with them, we decided to ask the flight attendants for assistance.

The flight attendants mentioned that there had already been two complaints from other passengers and suggested that we move to another seat. The captain, who appeared to be in charge, quickly found us new seats, and we were able to move immediately. Thanks to their swift and immediate action, we were able to enjoy the rest of the flight in safety and comfort. I truly appreciate the prompt and effective response from the flight attendants. However, I do regret not noting their names."

Customer service nonexistent.

Rude staff no matter which hemisphere you’re in.

I don’t think you could pay the flight attendants enough to crack a smile.

You might find a deal but you’ll pay in way of being frustrated and enduring ineptitude.

P.S. check-in staff is especially useless and will refer you to customer service phone staff while they stand there being fat and short.

Evidently, phone staff is also useless. Shocker. Enjoy your flights. (You won’t.)

The worst experience i had when j was flying to del via lhr from canada all my meals were vegetarian hindu meals 9 hour travel time for this last flight from LHR to del and still i chose the same hindu vegetarian meal option and i got chicken in my meal i asked if there was a mistake but they told me that this is what comes in a vegetarian meal even after i explained and asked for another option i was told that there is nothing left which is considered inhuman to leave someone vegetarian with a meal of chicken and nothing else to offer. I had to stay without food all throughout my long flight with this treatment. I have no words to explain my horrible experience with air canada which i would never suggest to any of my friends or family and i would also never wanna fly with them. This lack of cooperation from the crew and their service makes me wonder what type of service they provide even after charging so much for the tickets and so sympathy for the passengers flying without their entitled meal. The worst and inhumane experience i felt during this flight.