I have been with Comcast for many years. I am very happy with Comcast but I am not so happy that I would not jump ship if they cannot/will not keep me in a promo. If they think I am going to pay their top dollar for the services it get (I get a lot of them) they are sadly mistaking. I have called once or twice in my many years (15 years or so) doing what Mark did, I am still with Comcast. But believe me if I call wanting to lower my very expensive bill by entering a promo and they say no, I am gone. -- Lead, Follow I do not care just get out of my way.
I called Comcast twice asking them to match U-verse prices. I was refused both times. When I called to actually cancel Internet, the rep all but begged me to keep Internet at a reduced price but I told her it was too late and suggested she look at the logs of my earlier calls. I gave Comcast a chance to keep me by matching prices and they chose not to.