I was on my way to work at York St. John when my chain snapped. Luckily I happened to be just a few blocks away from the Giant store, so I walked it over and knocked on the door. It was about 15 minutes before the store opened, but they let me in and agreed to replace the chain before the end of the day, which was an enormous relief. They also replaced the rear cogs and the brake pads. The end result was a bit pricey, but they were incredibly friendly and helpful, considering I'd come to them out of nowhere before the store was even open. Absolute lifesavers!