Military and my Money HELP

[speedracer5]

Ok people this is the story.

I reenlisted in January of 2012 and LAT moved to a different MOS (job). In July 9th during lunch break i get called in to be told i have a class spot in Oklahoma and my flight is at 7pm on the 10th. I had to put in a DTS for travel and when i get there the next day at the airport it was not approved. (which a member from admin had helped me with). so i talked to my admin they told me to use my government charge card did not mention nothing about SATO so i bought my ticket flew there attended school and a week before coming back i call my admin to ask why do i not have a flight back she told me to book one threw the same airlines not mentioning SATO again so i did with my government card.

I get back to the states and PCS to my new unit after being at my new unit for 1 month they call me in the office to sign a paper stating i received a paper saying my Government Card is passed due its payment.
Apparently TECOM is only funding if the flight was bought threw SATO so they coverd all but 1200 which i had to pay due to my credit score and me getting NJP.

Who the fuck knew on flights we had to book threw sato this is BS

What can i do i want my DAM money back and its gone due to some E-4 thats dosnt know her job. Help ASAP