Hi there,
Welcome to the Community Forums! Thanks for your first post here.
I'm so sorry to hear you've been experiencing these pixilation issues on your TV box for so long, I can imagine how frustrating that must be after having to raise this to us numerous times.
I've had a quick look through the account notes and think at this point it'd be best for us to contact the Area Field Manager to see how this can be permanently resolved and as soon as possible.
I've sent him over an email explaining the situation - as soon as I have an update for you, I'll let you know from here.
Thanks for your patience.
Beth
Beth