I also ordered on the same day in December 2012 and their system re-dated my order - in my case February 2014.
Whilst I persuaded them to honour the original order they never backdated it, so no P2 has been forthcoming, and I have finally lost patience with their dreadful customer service.
Whilst their staff are generally polite, they are barely apologetic, stating that they have to rely on their automated system, and have no means to manually override it even when it is in error.
So today I cancelled my P2, J15, D16, K1 and D11/2 pre-orders worth over £500. I don't suppose they will give a monkeys of course, but they have lost my on-going spend as I will never go back to use them again.
The good news however, is that I have ordered from Waltons and Rails and saved money over Hattons overall!