hope it goes well for you.
Have you asked them who their extended warranty is through.
I would check the credentials of that free warranty.
I've done my investigations re: the warranty suppliers, and I found that it's the same mob Myer uses. Although, it's not really a warranty, it's more like an insurance policy.
Here's a link I found on Digital Centres website:
first Digital Centres Page:
and at the bottum, you'll find the link:
Here's a link to "United Electrical's" Myer warranty form:
And I have asked and they've assured me it's an extension(meaning the same rules apply) of the manufacturers warranty.
Although, I did find in some text "power surges, power spikes" will not be covered, so I'll have to get a surge protector. But if that kills the TV, then home insurance should cover it.