What was your lease period? If you get a note every 12 months, that would explain it. Most people are auto paid to the end of a billing cycle, idk that comcast

What was your lease period? If you get a note every 12 months, that would explain it. Most people are auto paid to the end of a billing cycle, idk that comcast gives credit. So moving in before the end of their cycle it should work. You say you move with your comcast router- if its a rented device, why shouldnt they be able to recognize the MAC address and connect?