HD Cable

Question regarding channel 1339(golf channel hd) on the cox HD line up. Why is that sometimes it will come on and sometimes it will not. I notice when it does not come on , neither does channel 1314(mlb) and channel 1016(wgn). When it does come on, so do those other channels. Every thing else works fine. I can reboot the box and it will work for a couple of days, but then back to the same. If everything else works would I still need a new box? Maybe a new HDMI cable?

Also, why does the Golf Channel (CH  1339) have a blue star next to it on the banner and the channel guide? Nothing else does.

Thanks, HELP?