Hi Irwan,
I'm sorry to hear that Test Day didn't go as well as hoped. Based on everything that you've described, there are a number of things to consider about how you studied and how you can better prepare for you next attempt:
1) You stated that you had recently been studying for OVER 12 hours a day. That was NOT a good idea - and it likely led to some 'burn out' before your Official GMAT (meaning that you were too tired to perform at a higher level on Test Day).
2) GMAC has publicly stated that the Official Score that you earn on Test Day is within about +/- 30 points of actual ability. If we ignore the one CAT that you retook, and assuming a similar 'swing' in how your CATs function, your Official score is right 'in the middle' of your CAT score results. And again, if you were too tired to perform at your best, and made a few too many little mistakes over the course of the Exam, then that would account for the points that you lost.
3) Many Test Takers spend 3 months (or more) of consistent study time before they hit their 'peak' scores. With just 1 month of study, you likely have not put in enough time and effort yet to have scored higher.
Thankfully, the GMAT is the same consistent, predictable Exam that it's always been, so you CAN train to score at a higher level. I suggest that you take a couple of days 'off', then come back and we discuss how best to study from here on. Your recent focus was to score high enough to receive a workplace scholarship. What is the deadline to apply for that offer?
GMAT assassins aren't born, they're made,
Rich