Every month, the provident fund is enough to repay the loan. Why is the balance getting less and less?
There are two possibilities. You need to check with the provident fund center. If the monthly provident fund is enough to repay your loan principal, the less and less balance is the deducted interest. If you are sure that the total amount of principal plus interest is less than or equal to the money you entered, then you need to make a detailed bill in your provident fund center and have a look at the deduction details.