Knowing that you have "digital" services, they simply deactivated your equipment from the office. 9 out of 10 people are none the wiser and think their service is "gone".
One summer, TW had a digital-only outage that affected a few people on our block. Out of curiosity, I disconnected the DVR and ran the cable straight to the TV and I got channels 2-78 (analog only). I had no set-top service nor RoadRunner for a few hours. My neighbor also lost his phone service.
If you cancel for real and don't have RR, they'll eventually come to your address and physically disconnect you at the pole or pedestal.