Indian Bank — Documents are not returned

I K Naga Kumar defence pensioner in Indian Bank Gokavaram East godavari Andhrapradesh.I availed a loan of 310000 on 08 08 2017 and i repaid the total loan on 14 12 2021. I submitted my ppo documents as a collateral for the loan in the bank. After closing the loan I requested the bank to return my documents which I have submitted in the bank. Branch manager telling me that my documents has been lost in the bank. I have been to bank many times from past 8 months but he is not responding and asking me change my saving account to another bank. Recently I met with an accident and my Spain got injured. I need loan very urgently. I am requesting you to look into this issue and please return my documents so that I can apply for loan in another bank. Thank you sir.