PhonePe — fraudulent transaction via debit card

I would like to bring this into your kind notice that today at 11.27 am unauthorized transactions took place from my father's icici bank debit card no:#3 of amount rs.5000/- at phonepe. Earlier he got a call on his mobile from mobile number [protected] and the person claimed that he was calling from icici debit card department and my father's credit card has been blocked and he would require the card no. To unblock it and as my father have no knowledge about the debit card transaction process he shared the card no. And cvv no. Too. When the call was over he got sms from icici bank stating transactions of the above said amount which was out from my father's account. As soon as i came to know about this i got the debit card blocked and now i need your help to cancel all the above transaction as soon as possible. Further please do the needful on urgent basis and revert on this mail [protected]@gmail.com