I want to go back to india

Dear brother I came to Saudi for job on a labour visa am working in Riyadh for carrefour hyper market as a cashier and my iqama is also made but my agent took my passport and gave me iqama. Now I don't want to work here and I want to go back to INDIA. My agent is asking me yo psy the fine of 12000 SAR, am very poor and I don't have money to pay. Please help me how can I go to India and what I have to do.

Why u should pay 12000sar ??

He is asking for iqama charges which is 12000 sar what can be done please suggest me my mother health is not ok.