Landlord Harassment — not refunding my security amount

Address:

122002

Hi, i stay in gurgaon. Its been a month that i have left the place of my ex-landlord's place and i have still not get my security amount. During the time of leaving i ask them to check the place and refund me the amount which is 10, 500 (After deducting all the dues). They send someone for house checking since the owners doesn't stay their and there is no care taker, i locked the room and informed them that i will open the lock the day you will return my money. I got a call from them asking to open the lock, otherwise i have to pay the rent for the days till their will be a lock. There was not even a single day that i didn't call or message them. Now i understand that these people intentionally did that just to make more money. After a week i got to know that these people broke my lock without my consent. I went to their house, where they live, but they didn't open the gate and from inside the lady clearly told me that i will not get my security amount. The biggest thing is her husband is in delhi police (Sho). Last week only i filled a compliant to the nearby police station. Though the person is helping me out but i don't think he is making the actual efforts. My owners have also threatened me that we are in a police and you cannot do anything against us. My question is if the police officers will do such kind of things, how can you expect them to me loyal in other cases. I am totally helpless. Request for a solution.