Looking for some advice here please. I bought a digital camera from Argos last week. Got home, charged the battery, switched it on, and one of the pixels on the screen is permanently switched (camera still works, but just irritating). Went back to the store for it to be swapped, and of course no more in stock, and it would seem country wide (I doubt that but...) Offered me a gift card voucher in exchange, but really do want that specific camera and went home to contemplate. Just seen the same camera at Comet, can I insist that Argos refund me my money, so that I can go and buy it from Comet? Am I within my rights?