Well, I got it all sorted out.
They said I could have a refund but they had to deduct a 10% 'restocking' fee

because I'd opened the box.
I told the lady at the returns desk that I was given the wrong information about the product and the only way of finding this out was to open the box.
After I explained the situation she was very happy to give me a full refund. The whole ordeal took less than 5 minutes, and most of that was spent in a queue.
Good customer service, it's just a shame the sales team don't know what they're doing.
And I had some luck too. I was talking to a mate about this whole situation and he replied with:
''Oh, you should have said something. A mate of mine's just split up with his missus and he's flogging all their shared stuff. They got a £900 Sony camera 6 months ago - only used once - and he wants to give it to a good home. He wants £50 for it.''
I'm awaiting a response
