I have the misfortune of having Comcast also, get the same story about hot and cold weather. The cable plant in this area is so old they cant give me HD and Im too wooded for a dish and no FIOS.They bought out Adelphia when they went belly up here and say theres no money for upgrades but I still pay the market price. Theres a VP Rick Germano I always complained to which always got a quick response from the local people.
Heres the address
https://www.comcast.com/Corporate/Customers/RickGCustCare.html I really dont blame the local people, not much they can do with an outdated cable plant and a corporate thats not willing to spend some of the millions theyre making to serve their customers. You only need to Google "Comcast complaints" to get a lifetime of reading
