Applied land patta and got rejected 3 times due to bribe expectations, what to do ?

I'm from a village near Tuticorin Airport , I have applied for patta name change in online for a land. The application got rejected more than 3 times with no proper reasons . So visited the VOA to enquire about the reason and rectify it . But it seams , the VOA is expecting bribe . Since I'm straight forward, I didn't give any . During the discussion, the VOA even casually told " If u want go and tell the Deputy ThaSildhar, I don't care " I assume may be the VAO and Thasildhar might be partners . When I asked my neighbor, he told " The VAO is rejecting most of the applications, so the applicants will come to see him . So what can I do now to proceed this without bribes ? How should I proceed with legal complaints , Any idea ?