4k box repeated service failures

I attempted to "upgrade" to 4k cable box during first week of November 2025.  The 4k box would not connect to TV.  Multiple efforts by technicians, reached via chat and phone conversation, were unable to provide a resolution.  Three technicians visits failed to get the 4k box to function properly.  During the last tech visit (on 12/23/2025) the cable from streetside box to the exterior house box was replaced.  The cable between the exterior house box and TV also replaced. Every connection checked by the onsite tech. The new 4k box still failed to connect. The frustrated tech installed a non-4k box which connected to the TV properly and seems to be performing normally more than 24 hours later.  Attempts to get 2 different 4k boxes installed failed to provide service for more than a few hours at a time before the picture went black and became frozen on the "Wecome" screen.  Apparently the new 4k boxes are incapable of providing proper service. I believe I am entitled to a credit for one month's service for frequently interrupted service.