Incident / Mishandling to proceed check-in & missed flight (3K582)

On 23-Feb-15, I was posted for Jetstar Asia Flight no. 3K582 from Yangon International airport to Singapore Changi Airport at 11:45 am.
============================================================================
Incident/ mishandling to customers as below.

On 23-Feb-15, I supposed to take Jetstar Flight (3K582) from Yangon to Singapore at 11:45 am. I was reached to Yangon international airport check-in counter at 11:00 am. Unfortunately, there was no Jetstar check-in counter for that flight. Then, I asked to MAI (Myanmar Airways International) staffs, they said that Jetstar check-in counter has been closed & I've got no chance to proceed for boarding ticket. Then, I tried to request MAI staffs (including Assistant Airport Manager Nwe Ni Thein, contact no. +9595031686 from MAI) who were served as Jetstar representative. But they just answered "sorry, I can't help you". At that time (about 11:15am to 11:30am), the flight which I suppose to take was still awaiting for the passengers who had bought tickets. I was seeking for help to get contact with Jetstar official agent but unfortunately there is no Jetstar official agent at Yangon International airport.
I understand that all passengers should reach to check-in counter 2 hours before departure time. But in Yangon, all the roads traffics are always jammed. Yangon is different from the other countries because people can travel in time in the other countries. In this case, MAI staffs should understand Yangon roads traffics condition & give chances to all passengers who could reach to airport before departure time. Then I looked around at Yangon International Airport, I saw there were 3 passengers including me & my sister Htet Htet Aung who missed this flight (3K582).

On 23-Feb-15 evening, we have bought 2 air tickets from Jetstar with price USD 720 (USD360 for each ticket) to go back Singapore on 24-Feb-2015 at 11:45 am the same timing, the same flight no. 3K582 as yesterday.

============================================================================

The real seen for today at Yangon International Airport

On 24-Feb-15, we have reached to Yangon International airport at 09:00 am and got chance to meet and discuss with Ms Nwe Ni Thein (from MAI) who has been handled yesterday's our check-in case. She said that she just followed Jetstar's instruction which is to close check-in counter at right time. Then, I have asked the question to her "Have you made final call via phone to those passengers who bought tickets and have not check-in yet?" Her answer is "No, I do not make final call to those". And she added "I do not have access right to see contact information of passengers who bought tickets. As a representative of Jetstar, MAI should have facility to access for passengers contacts. This is not acceptable for us.

Then, we waited more than 11:00 am near check-in counters & monitor the status of check-in counters. Unfortunately, today's Jetstar check-in counters were closed at 11:30 am which is totally different from yesterday.

That's mean, this check-in counters are working until 11:30 am, why MAI staffs close the counters very early in yesterday?????? This is so mean.

I want to know "how Jetstar authority could responce to us? And what actions will take to MAI staffs who are mishandle to Jetstar customers???"

International
Myanmar-Yangon
Singapore-Singapore