Well, Canadian Tire opens at 8:00- and they also have a website. They list a $100 pump- not sure if you want to spend that much.
Are you in Calgary or Edmonton?
Are you just missing the pump, or do you have the hose attachements? Because I would recommend buying this one pump from Totem that attaches to your drill- just because it would have uses in the future. Go to
www.totem.ca - pick your store and search for DMP21SA.