Agent took me to Police as I purchased from Owner directly and di

I saw a property 2/3 times through an agent. There were many other agents who discussed with me for this property. However I saw owner put advt. himself in 99 acres, so I called him and bought the flat. Now that Agent(who showed me the property) came to know that I bought the flat when I started living there. That agent started calling me every now and then. I never picked up his call. He took owner to police station and made him pay Half of the brokerage. He called me from Owner's cell and gave it to PSI in that police station. PSI called me to police station and asked me to pay the remaining half of the brokerage. I told PSI that I bought flat myself and made the whole deal myself. PSI threatened me that I would lose my IT job and put me in Jail. He also menaced that I will come to your company and arrest you in front of every one. So I agreed pay the amount and left police station. Agent told me that he will have to pay some cut to PSI as well. Next day I did not pay the amount and PSI sent police constables to my house when my wife and baby were alone at the house. I later made the complaint to his Senior officer(SI) and Anti Corruption, after which I did not receive any call from Police or Agent for a month. I am not sure if the matter is closed or if PSI and Agent are planning something big. That agent has already logged a compliant against me in police station. It is still a question how a PSI and SI level office accept complaints from a real estate agent who does not have his company registered and never paid tax. Could anyone please help me, what should do in this case ? I can pay the money, but it would be like succumbing to threats and that will only boost their confidence to make more innocent ppl vulnerable. Please suggest. Am I being too overconfident? Shall I pay the money and get rid of police ? Thanks Rahul