Jetstar Asia

I just had a horrible, horrible experience with Jet Star.
I made a purchase on the internet last week for a return flight from Singapore to Hong Kong. After keying in all my personal detail and credit card detail, a web page that says 'error - system time out' popped up, telling me to return to the home page to book again.
Based on the above incident, I went back to the Jetstar site and book again the next night, in which the booking went through and a refernce was sent to me via email.
It was then noted to me today that Jetstar has changed me double on the booking (I presume payment of the 'session time out' booking did went through). I called their Singapore hotline to explain the situation and asked for a refund, and was told that the refund would take 15 BUSINESS DAY!
As I objected to such, since I am the one who would have to pay for the credite card interest of the payment, I was then repeatedly told that this is a company policy and that there is nothing they can do about it. The junior account service person then passed the phone to a supervisor, who then repeated the same thing to me and more - she tried to turn the situation around to blame me for not calling them when there was a system time out, saying that,' Mame, when there was a system time out, you were suppose to call us'.
So, after 45 mins of waiting and having their 15 days refund policy cited to me by a bunch of muppets / robots, nothing was even going to be looked into. I have to pay for their mistake.
Clearly, if you want to know what is Jetstar for you, this is it - it is a BUDGET airline with BUDGETTED flights, BUDGETTED baggage weight, BUGETTED seats, BUGGETTED website, and MOST OF ALL, BUGGETTED SERVICE! If you can, stay far far away from them. Coz you are going to have to pay for their bloody mistakes, like me.