Sundance channel 165

Not sure why this channel is no longer playing.  I turned to Sundance 165 and now it says I have to subscribe to Sundance Channel., but Sundance is part of the channel lineup I am already paying for.

Can't seem to get through to Xfinity to talk online with someone.  Anyone knows what's going on. I am not paying more for a channel that is already part of my lineup.