Mts — threatened me

Address:

Kolkata, West Bengal

I got a call today from a lady Nisha Agarwal ([protected]) claiming to be from a Verification Department of Delhi District Court. She just confirmed my name, number and address and said that Advocate Vikram Rana has filed a case against me in Delhi District Court and hence I need to go to Delhi for the case. She further confirmed that she does not have any details of the case and gave me the case file number and the contact number of advocate Vikram Rana([protected]) and asked me to contact him to get the case details and decide whether I want to settle the case or promceed with the case. What should i do?