Idea Cellular — Fraudulent transactions on my citi credit card

Hi,

Received a call from [protected] on 9th june at around 5:30 pm with a lady on the other side. She introduced herself as from citi bank and said my rewards points are going to expire and can be redeemed and credited back as cash to account. She asked me to confirm the credit card number and expiry date.
When i objected to it, she shared details like credit card number, 1st 4 digits of cvv number, dob etc - which is a data breach happened from citi bank side.

Following which 4 transactions happened each amounting to rs 4, 785. Oo at ideamoney

Rs 4785.00 was spent on your credit card xxxx xxxx xxxx xxxx on 9-jun-17 at idea payment

Rs 4785.00 was spent on your credit card xxxx xxxx xxxx xxxx on 9-jun-17 at idea payment

Rs 4785.00 was spent on your credit card xxxx xxxx xxxx xxxx on 9-jun-17 at idea payment

Rs 4785.00 was spent on your credit card xxxx xxxx xxxx xxxx on 9-jun-17 at idea payment

Total of rs 19140.00 was debited from account to idea payment. Request you to take up this is a complaint and give resolutions by refunding the amount to account.

Request urgent attention