Freezing In the middle of the show

I have been having an issue for the past week now where a show I recorded will freeze in the middle or at the end and ask me if I want to record again because something is wrong with the recording. Then it will tell me to delete the show and the channel I have on at the time will say unavailable. I did the online chat today where she rebooted my box twice and still didn’t fix the issue. Cox ** ! Verizon here I come.