1. Based on the complaint filed by your father with the Police and if no action is forthcoming from the Police, meet the higher Police officials, like DCP, Commissioner of Police and apprise them of inaction by lower rung Police officials.
2. There is a Supreme Court Judgement relevant to you, which I am reproducing herewith "The Supreme Court in a landmark judgement on Thursday reiterated its earlier stand that banks cannot deploy musclemen for recovery of loans from defaulters thus forcing them to end their lives.
"We deem it appropriate to remind the banks and other financial institutions that we live in a civilised country and are governed by the rule of law," a bench comprising Justices Tarun Chatterjee and Dalveer Bhandari said".
3. You can approach the competent court to obtain favourable order directing the Police to take action against rowdy elements.