Shop Tenant not vacating the position nor giving the rent

Hi, this is Chetan from karnataka. I have rented a protion of my property for medical shop. The tenant have been for rent from 5 years where the aggrement have been renued every year. From past 9 months he is not paying rent and not opening the shop as well his phone is swith off. He has taken finance of 8lakhs and ran away. Financers are coming and asking for advance. I want my position back. How can I proceed on this....??? Under which act...??? Which section is it possible...??? I have given police complaint as well but they have give me a letter stating they can not involve in civil matters.....