Don't call. Go into the local customer service office. There you will talk to a real human being who is not making a lot of money and probably struggling to pay

Don't call. Go into the local customer service office. There you will talk to a real human being who is not making a lot of money and probably struggling to pay her own cable bill. She will be sympathetic. She will put you on the new customer discount plan, or cancel whatever you want without a lot of pushback.