I called 1-800-COMCAST and insisted they take my number off ALL their sales numbers because the minute I call and have them take me off their list another Comcast sales phone number from a different area code will call. I never answer them. I shouldn't have to call and have them stop calling me when A) I'm on the DO NOT CALL LIST and B) I'm exteremely ill and do not need to be jumping up at all hours of the day! I am SO done with them and am reporting them!
If you are a current or past Comcast customer, they can call you...until you tell them otherwise. The Do Not Call list does not pertain to anyone you do or have done business with.