I have had very much the same problems as other people regarding delivery from DX.
We were not available when the first delivery was made to sign for the goods, so a calling card was left. Rearranged on web site for next day, received message on the day to advise delivery would be between 15.50-1750hrs - no delivery.
Rearranged again for delivery after the weekend on the Monday, received message on the day to say delivery would be between 16.03-18.03hrs - no delivery again. Have emailed DX and the supplier of the goods, and awaiting their replies.