My friend borrowed 3 lakhs in Kolkata and is not returning it how to file recovery suit

You can file a civil suit for recovery of money before the civil court in Kolkata having jurisdiction, along with an application for attachment of the debtor's property. If the amount is within the pecuniary limits of the small causes court in West Bengal, you can file there for a faster disposal. Under West Bengal Premises Tenancy Act 1997, there may be provisions for summary proceedings under Order 37 CPC for faster recovery if you have a written acknowledgment of debt. You can also initiate proceedings under the Arbitration and Conciliation Act if the agreement contains an arbitration clause. If the debtor is untraceable, the Calcutta High Court can be approached for appropriate relief.