Is $317 too much for a cable bill?

I have a problem. I pay $317 for a cable bill. I'm the only one in the household who works. My mother and I tried to get it down to $250 but my older brother was complaining over loss of channels so my mother got the channels back. He doesn't see anything wrong with paying $317 a month. We're with Xfinity. It's hard to save money in a situation like that. What should I do?