Yeah, that sounds like an admin cockup. They should refund you if you return the models and magazines - they have a freepost address for returns in the UK but elsewhere not sure. If all else fails, you could complain to the credit card company.Same here, I only wanted to spend money on those I really wanted, so I emailed to cancel and got a response saying that was fine and they had done so, which must have been a month ago.
Then the other day I found I had the money taken from my account, and two models sent out to me, the only thing I didn't get was the email saying they were on there way.