TV guide are fakey

Ever experience that a show is being list at a certain timeslot and channel in the TV section and it doesn't show at all? Yes it's been happening every week. Either they don't bother to update the TV guides or they just do not bother. It is annoying when your favorite show gone missing or you missed it because they are not expected to be shown. So what can be done? Go rent the DVD or set your VCR to record. If there isn't any you didn't waste any time waiting for it.