Contact IDFC FASTag Customer Care Number 1800 266 9970 or email to [email protected] for queries regarding FASTag , Toll plaza complaints, etc. You can buy a new FASTag by contacting the IDFC Bank FASTag customer care number given below. Contact number: 1800 266 9970 For a new registration or queries, you can write to IDFC FIRST Bank at [email protected]. Get a complete 2025 guide to HDFC FASTag. Learn how to apply online or offline, complete KYC, activate and link your FASTag, check balance, recharge via UPI or PayZapp, and contact HDFC FASTag customer care . Enjoy seamless, cashless toll payments nationwide. Since NHAI has launched bank neutral NHAI FASTag and 1033 number is printed on ‘NHAI FASTags’ as ‘ Customer Care Number ’ to provide support to NHAI FASTag users. Salient Features: A single 4-digit Toll Free Universal Access Number (UAN) “1033”.