No Signal and No Fix

Every 3 of 4 times I turn on my tv it will say “no signal”- even when there are no outages in area. I either have to reset power cable or reset from phone app. I have played with cables, they sent a new box, then a new modem. Nothing has been fixed and I am tired of the run around each time I call or chat. It has been countless hours with no solution. Anyone else have any luck? Their statement around committing to respect customers time, simplifying experience, and making things right has been far from the truth. I have screen shots of promises to call back and to adjust bill- none of it happened. A week went by after a modem was supposed to be delivered- oh, I dont see that, it never went through. Fed up.