I phoned up on the 6th, got through to an automated thing and was asked to leave my name and number. which I did.
No call back on the 7th so phoned again. This time I got through to someone who confirmed they had my details (i.e. I have won a Wii) and said the "order" had been passed through to the despatch warehouse and I should have it by now.
As I obviously haven't got it and haven't had any cards through the door saying someone's attempted to deliver, she said she'd chase it up and get back to me.
Didn't get a call back today either, so have just phoned them again, only to be told the woman who's dealing with it has just left for the day. I left my name and number and was told she'll give me a call tomorrow...