Did Canada Post leave a note on your door about where to pick it up? If not you may be SOL'ed especially if that other party accepted your parcel. Did Canada Post's website indicate that it was at least delivered to your city? Best bet would be to call Canada Post ASAP to see what's up. And contact the seller to confirm the shipping address they used.Hopefully everything works out for you.
5/20/16 at 9:28pm