Tenant refuse to vacate and attacking owner

Hi Sir, I(owner) have given our groud floor for lease for amount of 4lakhs on contract of 2 years. We have received 3lakhs from the tenant as advance .On the document we have mentioned like we are taking 3 lakhs initially and the remaining 1lakh after one month of occupation. After moving in the tenant has denied to give 1 lakh amount & agreed to vacate. We have given 2 weeks time to vacate. After that also they are still not vacating. And the tenant is attacking me and refusing to vacate.what should I do ? I have heard that if we have filed a case again them means it will come under civil and it will take long time ,even for years. Kindly please advice me to a suitable method to get rid of the tenant soon. I am ready to deliver the 3lakh amount to the tenant. And I am living in fear because of all the violence by the tenant. I have talked to my local person who is studying for becoming a lawyer. He mentioned that to give a complaint in local police station and they will help. Please Advise. Please tell me what should I do ?