PROMISSORY NOTE

I am a resident of srikakulam. My father is a senior citizen. I have already cleared 30 lakhs of my debts. We are 3kids for my late mother, My elder brother is a doctor and my elder sister is married. My mother died when I was 3 years old. My step mother is having a son who is earning a good amount.

I already cleared 30 lakhs of my debts in which 19 lakhs of it didn't have my signature in those promissory notes. But I signed on some promissory notes along with my father and my step mother which were of 15 lakhs.

My father recently complained in police station that I am not clearing debts. Police mentally harassed me and made me signed on a 100rs stamp paper stating that I have to clear 23 lakhs more.DSP sir knows that they mentally harassed me as my wife approached him to release me from the police hands.

We are 3 brothers. all are earning good. but still they are harassing only me to clear debts but neither of my brother's.
please advice