Pixelation and freezing of video on Sportsnet 4k channel 118 Helix

Why is this a constant problem. Switched to Helix mid July from Illico. Have had nothing

but issues with 4k video. Two visits by technicians, unable to solve the problem. Was told that a work order has been issued to resolve for “general” area. Very frustrated with response so far. Of note Illico 4k Samsung terminal, no issues whatsoever.