EarlySalary — Paid but not closed by the company

Hi
I had taken a loan about a year ago. And I have paid the full amount as well.
However an agent from the company did not close my account. And I have been charged late payment fees every month.
I did speak with an agent and they told me to pay an amount to close the account.
I paid as agreed and after that the agent is not responding to my calls neither did he close the account as promised.
If you deduct all the late fees for which I have been charged you would see that I have nothing left to pay. They have been charging me for a mistake made by the company

Please look into this issue on an urgent basis