I"m sorry for your loss. With the cable companies you can sometimes downgrade to the lowest level of service, and return all the boxes, remotes, modems, etc. that you may be paying to "rent." You might not be able to use the service that way, but it would get your bill as low as possible. You might also try appealing to a higher level of person up the chain from customer service, or asking on their facebook page.
I just had a go-around with Verizon - I was "upgraded" but the service never worked and they tried to charge me $165 for cancelling. Ultimately they reversed the charge but it took a lot of arguing, letters to the BBB, etc. They really have no reason to let people out of contracts other than providing good "customer service" - which they don't seem particularly motivated to do.