That's a tricky one, are you even sure your issue is with Air Canada, and not their contractor, Chorus Aviation?

Does BC Small Claims have jurisdiction to deal with a nationally registered interprovincial airline?

Does your issue more properly fall within the auspices of the Canadian Transportation Agency, as a violation of AC's tariff, the rules that legally define your relationship with Air Canada?

Maybe describe your issue here, anonymize the details if you want. We won't refer you to the Canadian industry's proverbial ambulance chaser Gabor Lukacs, but if you have a legitimate issue for which there is administrative or legal redress available, many of us have received reasonable satisfaction with various different methods.