I've been suffering from bad pixelation on all sky sports, movies and doc hd channels. I've tried all the usual fixes, and have been visited by an engineer before for this. I can't call VM, and the chat isn't responding. The last message I had was an "I'll check this and get back to you". That was 4 hours ago and now there is no response from anyone. The channels are terrible and utterly unwatchable. Are there any other ways of getting this sorted??