And i found this
How to delete your @PayTM account#DeletePayTM #UninstallPaytm
1. Go to 24×7 help section
2. Select "My Account"
3. Click on unable to access my account – Mobile phone lost
4. Write in the message window "Phone lost, unauthorized activity likely, block my account" pic.twitter.com/muT7ekMd8g— Ajay Soin (@SoinAjay) May 25, 2018