I couldn't cancel my Comcast service via phone because the automatic system hung up on me (I tried again the next day).
I just stopped paying (removed my credit card from the system), and after calling me multiple times about the outstanding charges, they eventually figured out that I wanted to cancel.
They still tried to bill me for the time between when I attempted to cancel and when the service was actually disconnected, even though I explained I was unwilling to pay this amount. Ultimately, they transferred the bill to a debt collection agency, and unfortunately I failed to dispute within 30 days (was traveling), so I ended up having to pay it.
I just stopped paying (removed my credit card from the system), and after calling me multiple times about the outstanding charges, they eventually figured out that I wanted to cancel.
They still tried to bill me for the time between when I attempted to cancel and when the service was actually disconnected, even though I explained I was unwilling to pay this amount. Ultimately, they transferred the bill to a debt collection agency, and unfortunately I failed to dispute within 30 days (was traveling), so I ended up having to pay it.