Ok... I called them up for you. The lady who answered the hotline has no idea at all whether they can accept cash at Dell Direct stores (Funan or Suntec). And when I asked her for the stores' number, she has no idea too. She looks like only know how to take orders.
And so.... I used the Dell online chat. The guy who answered is more knowledgeable. He said they can only take credit cards, cheque, or TT at that two stores. No cash or nets payment. But, he said if you go down to the Dell booth at PC show, they will be able to accept cash or nets.
so,
BBB! ;p
Hope that helps.