I can see why you were tricked, and I expect many have been, but this is rather an odd one.
Using UK addresses and even telephone numbers to appear legitimate is not new, and there are even dealers openly selling London telephone-numbers to any old spiv going even if not physically in the British Isles.
Entering “allcontent.club” in the search-bar goes nowhere. It is a brand, not a company name.
Eventually I discovered that the address is of a home in a housing-estate, though if the business needs merely a small office that itself is not a sign of anything untoward. Many sole traders work at and from home.
The same address also hosts something called “Content 4 all” offering pop-music and games, its own web-site clearly showing it as aimed at teenagers. The same also trades as “gamestime.zone.” I will leave it to the music and games industry to establish if it is following copyright law!
Would a major manufacturer like Samsung, and a bank or credit-card company, really administer their guarantees use a pop and games purveyor in the spare bedroom?
How does such a trader as Lexech even know you bought a television? Who gave “The Occupier, 43 Budham Way…” your purchase details?
A letter to the Trading Standards Office might not come amiss.
‘
I think the lesson for us all is to establish before signing or pressing “Enter” the identity and bona-fide of any alleged guarantee-agency, and ask the dealer or manufacturer suitably awkward questions….
.
Also, why do you need “register” for a guarantee anyway? I may be wrong but I thought basic warrantees on goods sold in the UK at least, were valid without needing registration, as long as you can prove you bought them, when and where.