Passport Office Kolkata — police not coming for police verification

Myself anil nair, arn 18-[protected] — call came from [protected] kolkata bidhan nagar (E) police station asking for police verification — i was in trivandrum — after nearly 2 months i m back in kolkata — rang the above number and asked him whether he has submitted the report — he said no — asked him for verification — he said to come on 18/1/19 at purto bhavan, salt lake sector-2, room-303 between 10.30 and 11.30 but hasn't given his name, when asked for — but why at some other place instead of police station/thana — i felt a little suspicious — kindly check the veracity of the number [protected], whether the person is genuine or fraud and shall i have to take re-verification permission from rpo — anik nair [protected]