Mind your receipts.
Bought TV in Nov 23 in Tesco Artane and all was well until early July this year when the screen began to fail. Look for but couldn't find receipt. Best I could do was photoshoot of card statement. Presented to customer service but was told it wasn't proof of purchase. Felt brushed off by assistant but not deterred. Spoke to Caitlin managing the checkout area and showed what proof I had. She proceeded to elevate my problem to a higher level. As a result of her efforts she informed me they would honour the guarantee. Many thanks to Caitlin for her help. It does pay to persist. Also thank you to Tesco Artane.