Fraud caller seeking information of the atm cards by stating the fictitious emphasis of atm cards will be blocked and further linking atm to aadhar card is necessary to avoid such hassel! The number itself is a number from bihar. The number is - 8877969388 Lastly when denied of his fraud tactical efforts on phone the person was frustrated and ended the call relevantly. I have the audio recording of the call and the conversation as a proof!
