I have used the small claims court and various consumer laws to force the retailers (as the laws apply to them not the manfr) to refund me in full or part for several bits of internet connected techno-junk.
I think the UK has broadly similar laws.
If you can't use the internet features because it is spying - and I would bet the retailer did not disclose any of that, then I would say you have lost 70% of the value of an internet connected TV.
I got a full refund for a Sony TV that played from you tube, when YT changed the API, and it stopped working. I had a reasonable expectation that the TV would work as advertised by the retailer for 3-4 years.
Biting the hand that feeds IT
