I had a bag lost for two weeks. Here's the deal. You need to go to the airport physically (dress nicely), go to the lost baggage office, find that one person (probably from the prairie provinces) who'll actually LISTEN to you, and make puppy-eyes at her (it's usually a "her"). She knows all the tricks for working the system, and she'll get you your bag, if it's humanly possible.That’s what happened here for over four months. I was listening to this woman being interviewed on the radio this morning. She did send piles and piles and piles of emails and so on and so forth, but also was directly at the airport with the AirTag information and got nowhere.
She and her husband eventually just drove to this storage compound and even figured out which container it was in. Eventually when the police cracked open the container with their warrant, there was something like 500 suitcases in there.