Paytm — Fraudulent transaction for 9999.00

On 26/06/2016, i have received a fake call claiming that they are calling from hdfc to redeem my expired reward points. They have used my hdfc credit card nfor rs.9999 from paytm mobile solutions at 4.27 pm on 26/06/2016. My bank needs cancellation proof from you to proceed further.

I want you to dishonor this transaction as this totally happened without my knowledge.