http://www.slate.com/blogs/moneybox/2014/08/05/comcast_customer_service_here_s_how_they_try_to_convince_people_not_to_drop.html
A pice of shoite company doesn't deserve a single customer. And need I remind you that they censor websites? Google it!
They suggest the easiest way to cut comcast service is to tell them you're moving out of the country, or faking your own death.