I'll ring their customer services when it's open again in the morning.
I take the point about getting a discount on the display model. We did ask and were refused, but to be honest it was a very good price anyway (as it's an older model), and we got a good deal with a stand and a home cinema system at a good price, so I was happy with what I paid for it, which is the main thing.
If it doesn't work properly though, you are entitled to a full refund for the television - irrepsective of whether or not they gave you a good deal on the other stuff. You might be able to live without a fully functioning telly/remote now, but it'll become an issue down the line.