Originally Posted by FBinNY

Aligning a wheel isn't part of fixing a flat, but if the wheel wasn't rubbing before, odds are it didn't suddenly get that way. The shop probably failed to check the exact wheel position when installing it (with horizontal dropouts). If you have vertical dropouts the shop might have not pocketed the wheel fully into the dropouts (a common error among mechanics who install wheels with the bike elevated) or bumped the brakes, or with canti's moved the yoke carrier which moves the brakes over.