[Change Class Problem.. [No Destroyer Class?]]

I want to change my job at cindamook, but when i finish the quest, the job change doesnt show up Destroyer Class..

Can you help me ?

 

Here's some Screenshot :

 

[[Game] ♬ Music Lyric ♬]

Bruno Mars - Gorilla

 

~next~

 

The best thing about tonight's that we're not fighting
Could it be that we have been this way before
I know you don't think that I am trying
I know you're wearing thin down to the core

But hold your breath
Because tonight will be the night that I will fall for you
Over again
Don't make me change my mind
Or I won't live to see another day
I swear it's true
Because a girl like you is impossible to find
You're impossible to find