Left job because of torture

Hello, I got selected in icici po, then they have made us do PGDB whose course fees was 3.85 lacs, they have made an agreement that this loan amount will be deducted from your salary for 5 yrs. with some 15% interest rate, so I worked there for 15 months, I left the job because the Branch manager has tortured me a lot, she was not letting me stay in the job, it was very difficult for me to stay in that job even for a single day, still I stayed for 15 months. And I was unable to resign as there was SLA. And without paying complete amount, I was not getting option to apply for resignation, so I left the job without notice period by sending mail to HR stating my health condition is not good, but HR asked to visit, so I told her the truth , but HR didn't helped me and she again asked to join same branch, so I didn't join on the same branch as Branch manager will torture me again, because of this fear, I left the job. Then after 2-3 months I started getting calls to pay the amount with 15% interest , now the loan amount has become Rs. 7 lacs with interest, I don't have anything to pay and I have become jobless, they haven't given me experience letter, my years are getting wasted because of this bad experience...... Is it possible to get experience letter and what will they do if I unable to pay the amount? And is there any possibility to join another bank, means what if icici bank people will know that I started working in another bank?? I am still unmarried girl, and my age is 30 , after having this bad experience with this job, I have lost all hope to get job and to get married??