ICICI Prudential — Threat by the calling executive

One Mr.Rajiv, claiming to be calling from ICICI Prudential, Head Office,
(Videocon Building), Delhi has enquired about my existing policy and said I can invest further Rs.30000.00 for 7 years and will get Rs.300000.00 on 7th year first day.
I have told him that Insurance Policies were never sold like this and also that I could make out that he is not calling from ICICI, as there is no Head Office in Delhi, he started threatening me that I should prove that he is not from ICICI. I have told him that I do not want to talk any more and I have disconnected.

He again called me in a few minutes and threatened me that he will make my life miserable.
I have told him that I have both his numbers and I am going to Police, he disconnected.
The numbers from which he had called me :[protected] &[protected] and[protected].
I DO HAVE ANY FEAR ON ALL THIS, BUT THESE CATAGORY OF CALLING ASSITANTS BY REPUTED COMPANIES ARE ONLY SPOILING THEIR NAME IN THE MARKET.