Citibank — Getting many calls for credit card and personal loan

This is disgusting, getting too many calls (Atleast 2-3 calls/day) from CITI bank and their consultancies for personal loans and credit card. A day is starting and ending with CITI bank call. Hope you can understand how they are irritating. I didn't apply for loan/credit cards in any CITI anywhere.
Couldn't understand how bank got my numbers.
Kindly remove my number (+91 - [protected], +91-[protected]) from your database. Expecting from now not to get any call till i apply for loans or credit cards.

Thanks,