Depends on what you bought, that will determine if they ship from Singapore or the warehouse in the US. Payment processor is not in the US, your payment can take upto 3 days or more to processes (your dealing with an international order). Sites outside the US will ship once your payment goes through.
Only a handful of people have used them because the live in Singapore or they were the only ones to have in stock an item someone wanted at the time of purchase. That part of the world has an average of a 13hr time difference, they may have not seen your email yet if you waited til the next day for a reply.
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Cheap prices tend to mean little to no customer support or they don't have an employee that can read [insert your language here] and respond back.
Free shipping tends to mean the slowest shipping method possible which tends to be postal.
Don't expect "next day shipping", this isn't amazon.