Is the TV model new? It could be in the showroom for more than 30 days if the shop only demo'ed the TV when requested by customers. Let's say the demo time was 2 hours daily, it would be well over 3 months. If I were to buy from the shop and they had been honest to me, I wouldn't mind to take it. But it's very obvious the TV wasn't brand new and the shop claimed otherwise. If I'm in your position I will definitely make a fuss.