Just to update everyone, I have received an email from Asiarooms (4 actually stating the same thing...similar to spam) that I will get my refund for the remaining 2 nights. As they had already charged the original 3 nights hotel stay into my credit card, they will have to refund it back to the same credit card.

I have already contacted my bank and explained the situation to them. According to my bank, it takes the bank up to 4 working days to process the refund, from the date the refund is given by Asiarooms. So I will wait and see if it is processed within a week or so. If I do not get my refund from Asiarooms in a timely fashion, my bank is willing to and has offered to take action against them.

So, travellers please take note that if you explain your situation to your bank and credit card company, I am sure that they will be willing to help you pursue your claim. My bank is also the credit card issuing company. Asiarooms states that the bank could take 15-45 days to process a refund as it needs to be reflected in the next billing cycle, but as my credit card is also a debit card, there is no next billing cycle and will only take 4 days to process. So take note of that too. I know that my other credit card issued by Amex also has procedures in place for such situations and will be willingto help you gain your refund, assuming you are really entitled to it.