Citibank — fraudulent transactions on citi credit card

Address:

411040

Hi,
On 28 dec 2018, 3 transactions made by some unknown source from my citi bank credit card.
I immediately called the customer service and blocked the card and raised the dispute.
Card was not stolen and still with me at the time of these transactions.
Also, i didnt receive any otp for these transactions. I always use the otp mode for any online transaction.

The transactions are done in different currency.

11, 900 pkr
12, 000 pkr
11, 800 pkr

Kindly proceed the refund process as these transactions are fraudulent.