1) claim of banks would be barred by limitation . loan was taken in year 2003-04
2) no payments have been made for 10 years . banks did not take any recovery proceedings .
3) you are not liable to pay your father debts unless you have inherited some property from your father . it would be limited to extent of your inheritance .
4) just inform the banks that your father is not traceable and you are not liable for your father debts .