Nobody.
It's a generic term since eBay does not know the exact name of every service offered by every one of the 178 members of the Universal Post a Union
What country is your item shipped from? Look on their postal service's website. Most will give information in English as well.
When the item arrives in Canada, it will show on the Canada Post website.
But really it is not important.
Tracking protects the SELLER against false claim of non-delivery. For the buyer it is just the warm fuzzies.
If your item is not in your hands 20* days after payment, go to the Resolution Centre at the bottom of this page and open an Item Not Received dispute.
If the seller cannot prove delivery (see above) you will be refunded.
*30 for Asian sellers , but don't get schmoozed into longer waits.
