I wish I had done my research and seen this feedback before ordering through dealextreme.
I have made an order for a number of items and paid for them at the same time, + delivery. DX has emailed me a number of times advising some items are on back order and asking if I want to change the order or delivery.
That would be great, but it is impossible to contact them to advise that is what I want. It looks like they are happy to take your money, but then do not want to hear from you and you have no idea if they are ever going to deliver the order you have already paid for.
I have just sent the same message to them on their feedback forum, but am not hopeful of any satisfactory response. I will advise.
Only other option may be to take the complaint to the Hong Kong Trade Development Council