Illegal Tenant

Namsthe Iam from Karnataka-Banglore. Kindly advise me. I was taking care of house of my neighbor he lives in kolkotta during the month of April I was out of station so I gave the key to my tenant saying him if anyone is interested for rent show them the house, meanwhile a person came in and asked for key telling that he has spoken to the owner from kolkatta and the agreement is done. He believed that person and gave the key but in the meantime the owner phoned me telling the agreement is not done he only paid 15 thousand token advance and now it's going to 8 months rent and maintance is not paid so far at the same time court notice is sent from kolkatta high court in the month of September the culprit has signed and taken notice from postman but not vaccating, so in the month of December 3rd owner came down to Bangalore approached local R T Nagar police station, police have warned and gave 15 days of grace period but still refuse to leave the house..on this month Jan 10th complaint has been lodged . Kindly advise