I have a Citi Bank Credit Card and most of the time I am paying my minimum dues on time. But today from morning onwards I have received so many calls form Tata Consultancy Services and saying that they are calling on behalf of Citi Bank, although the same thing was not informed to me by Citi Bank and asking for my personal information. When I said i m not interested in providing my personal information, they are calling me again & again and now I am mentally harassed.