Update:

I also posted a tweet about this, and shortly thereafter, I received a reply from 311 Toronto wanting more info so they can figure out what caused the delay. 

To their credit, my original email was to them, and they replied the very next day.  It’s just that their reply was essentially a notice saying that they would forward my inquiry to “Revenue Services.”  From a customer-service perspective, however, who’s responsible for what doesn’t really matter.  The point is it took two-and-a-half months for me to get a response that could help my situation.

More if/as this story progresses.