Don't forget CRA has offices across Canada. If the call was legitimate, it could have been from BC. I'm sure it's CRA's practice that other cities are responsible. A CRA employee shouldn't come in contact with their neighbour's tax returns or to make collection calls. It makes sense to me. Discretion and privacy.
As an aside, I've been teleworking from home since Covid began. I've lost count how many courier deliveries I've missed. But if I click the link, I can re-schedule delivery.