I know this is late but I just took back a digital camera and expansion card that we had for 15 days, out of it's pack.
I told her it was rubbish, she said is it faulty? I said I didn't know I wasn't a camera repairer but we had tried and could not get a good picture out of it no matter what we did. It was £50 and the card was £20 but discounted to £10 as we bought it with the camera.
They said they would put the camera through as faulty even though we were outside the 14 day money back guarantee, and they were idling about the card but I explained that I wouldn't have bought the card if I hadn't bought the camera, and plus that, if they let me keep it, they would be giving away a £20 product for £10 and losing money - so the manager told the girl to book it through as damaged stock.
I thought they very good about it, I was really impressed with their service and although I can't write to head office incase they did something they shouldn't have - I might get them in to trouble, I think it's worth noting that people can be really reasonable when you stay cool, explain and remain polite.
I took my £60 straight to ARGOS and bought a digital camer + printer for £90 which is superb! The £50 one was just junk. It was a £100 camera on a half price offer, but it was no good for anything. I am greatful to Woolworths.