Bank Of Maharashtra — Refusal to close Fixed Deposit and it's receipt

I am retail customer of Bank Of Maharashtra Sangam CHS Sushila Dutta Bunglow Padmavati branch. My saving account number is [protected]. I have an FD [protected] which is 10 years old and I do not have its receipt. I want to close this FD. When I approached the bank the lady at the bank asked me to file an affidavit on a 500 Rs stamp paper. I asked her when can I meet the branch manager on which she let the conversation die. I am the sole owner of the account and want a easy way to close the FD. could you please initiate a easy way to achieve this

I had filled a online grievance W[protected] which was closed without comments or actions. Please find the attachment.

I am very dissatisfied with this. Expecting a quick resolution on this.