Dear @suresh_kumar
To raise concerns about unauthorized or fraudulent transactions on your FASTag, please call the IHMCL helpline number (netc.org.in) 1033 or contact your respective FASTag provider (FASTag helpline numbers (npci.org.in)).
To file a police complaint, you can visit the nearest local police station or use the CCTNS Citizen portal of the Karnataka State Police. To know more, read: How can I file police complaint or e-FIR to Karnataka Police?