Capital First — Loan Recovery Fraud

I took a business loan from capital first for the amount of Rs. 1, 70, 000. I requested for the loan to be settled as I incurred financial losses. I was asked to pay initially an amount of Rs. 87000 towards settlement. I notified the agent that I won't be able to pay such a huge amount and that the maximum amount I could pay was Rs. 66000. The agent told me to pay that amount and that he'll re-issue me a new settlement letter with the paid amount. I paid the amount but I never got a settlement letter for paid amount infact I was given a letter with the settlement amount of Rs. 87000 in 2018. I was again contacted by a collection agent from bank in Jan of 2020 asking me to pay my dues towards my loan account. I told him what I had paid and he finally gave me a settlement amount of Rs. 25000 towards my loan account. The amount was paid to capital first in there HDFC bank account which was provided to me via ECS. I received a settlement letter for the same as well. Now again in 2021 I am being contacted by the recovery agents of the bank asking me to pay my dues of Rs. 75000 towards my loan. I told them that I had already got the account settled and that I have all the proofs for it to which they say that they don't have any such record of it. I have settlement letters, conversation proof with agents, email confirmation of payment from the bank as well. Please help me with this. I am being constantly harrassed by bank officials and being defrauded again and again. My loan account number is 5413677