You will find that Culinox wont say if they are out of stock on their website.
I would suggest that you call them to double check the stock of your order.
They may have changed since - but about 2 years ago I ordered two billy tins from them. One arrvied and I was refunded for the other. About 6 months later I was billed by them again and they posted out the other billy tin to my old address without even checking i still wanted it. Obviously i ended up requiring another refund as the tin went somewhere where i couldnt go to get it.
So you may well have ended up on a back order list like i did with Culinox.
If Andrew says they are out of stock everywhere then i'd be inclined to check the status of my order.