Original Academic Certificates not be returning

Hi My name is Thamil, I'm 2020 passed out Computer science Engineering Student. I got a job in private company at Hosur. They told me to sign the bond for 2 years and submit your original documents to the company but in that situation my family financial level was so poor and I want this job to manage that so that I agreed and submit the documents and signed bond for 2 years when I was joining. 1 year I worked in that company and then unfortunately my father had a health issues so I want to pamper my father so I return to home. After that I told my situation to my HR and also I told her to I'm gone to resign my job due to my family condition I takeover my father business so please accept my resignation and give back my original documents. They told me to give the amount Of 1 year salary it around 1Lakh and 100% penalty which means 2Lakh rupees, they told that if I want original documents I need to pay 2 Lakhs rupees for retain my original documents. I don't have that much amount to retain my certificates. Please give some advices how to get my original certificate from that company.