I ordered ours on the 22nd as well, still not heard anything or received mag either.
I did see the same offer in last months magazine (i bought it without realising it was same magazine) and the offer apparently finished on the 13th October. Im naively assuming that they have lots of orders and direct debits to process and it will take its time. I hope the train arrives before xmas. It was an extra present for LO.
JMS if you do end up phoning them, please keep us upto date.