Hi there,,
1stly.. A very happy new year to u all and ur loved ones..
Its not really an Answer but I still felt to reply.. I very well know what u must be going through.. been there felt that :) (3yrs) and finally i got approval yesterday yay!!
The worst thing is, they never tell u the reason for rejection.. no matter what.. 2 basic issues of rejection i came to understand are Nationality & Salary.. and well like somebody said u need "Vasta" as ur particulars r in order..
BTW.. hope all ur Doc(certificates & degree) are duly attested by ur embassy and ministry of foreign affairs..

Anyways,, I wish u all the best and pray u get what u deserve...

Good Luck 2 U...