Why were we not notified of a planned outage?

It's now hour four of our outage - I spoke with the Xfinity employees on site, and they tell me this has been planned for weeks. All of us who work from home in the neighborhood were NOT informed in advance, and we're all losing most of our work day productivity. This is unacceptable.

How do I go about getting a credit on my bill for this downtime, and how can we prevent this unfortunate situation from occurring again?