HDB Financial Services — Fraud in terms of charging Fine

I have submitted an account change request back in the month of May stating clearly that my existing account is closed so please change it to my new account, the person there gave me an assurance as need not to worry it will be done and I need to pay 880 INR as change request fee, I did that and its been 3 months till now they are trying to get money from my closed account and I am paying them through PhonePe every month and on top of it I am being charged each month fine of 880 INR which is a clear fraud thing, that more than 90 days, my bank account they are not able to change and I am compelled to pay through PhonePe and since they are not able to change back account number, I will be the one paying fine as well what a blasphemy and fraud, wish our laws could have been strict for these big firms fraud as well. My loan account number is 13408282.