My Tracking number is...RA181253827CN. I just wrote the last post. Please tell me where it is! Thanks :)

RA181253827CN Collection Shanghai CA Wed, 16 Oct 2013 16:37:00 GMT
RA181253827CN Departure from outward office of exchange Shanghai CA Thu, 17 Oct 2013 21:39:00 GMT
RA181253827CN Delivery to airport Shanghai CA Sun, 20 Oct 2013 02:32:00 GMT
RA181253827CN Shipping Shanghai CA Sun, 27 Oct 2013 00:00:00 GMT
RA181253827CN Shipping Ended Vancouver CA Sun, 27 Oct 2013 00:00:00 GMT
RA181253827CN Delivery successful Vancouver CA Sun, 27 Oct 2013 00:00:00 GMT

Does that mean that my package was delivered to Vancouver? And not Calgary?

Yes it means you package was delivered to Vancouver and not Calgary and how long have you been waiting for your parcel to arrive

I've been waiting a month and it was never supposed to be delivered to Vancouver. The only address I gave was to calgary. So now my parcel was delivered to someone else.

Yes I think that is right

So would that be the post office problem or the shippers problem?

if I was you I would contract you local customs office and your local post office