How To Respond? Should I Reply Or Ignore.

I joined a company in sep 2021 as trainee they asked me to signed agreement bond if I break that bond I have to pay 50k penalty to company they did not provide me any training but they just paid me stipend for 6 month after that April 2022 I got placed on company's payroll and after one month they depoted me on site for work but after 10 days I left that site due to family health issues and my exam. I write mail to my manager and I left but after that they continuously asked me to come to site and I did not go and ignore them because I wast stuck in problem. I abscond from my company before that I submit all property of company and now they send me legal notice from advocate for 2 lakh compensation to pay to my company for loss of company and they mentioned that I left job for higher salary but I am not doing any job. They mentioned they will take legal action against me by police authorities and file complaint in civil court. Please help me. I don't know what to do?