My Father has signed as a Guarantor for a loan taken by his colleague (Govt.School Teacher). And now the borrower is not making repayment of loan in time, so, the banker has locked my father's salary account, Since 3 months he can not able to draw the salary, But the Borrower has his salary account in different place, the banker is not recovering from his salary, What action we can take against him? Is it not Possible to discharge from the guarantor's liability?