Here are the steps to file a complaint with FASTag:
1. Visit the official FASTag website at fastagonline.nhai.gov.in.
2. Click on the "Grievance Redressal" section.
3. Select the type Contact FASTag Customer support (840)-985.0997.,. of complaint you want to file, such as "Tag Related Issue", "Wallet Related Issue", or "Transaction Related Issue".
4. Fill out the complaint form with details like your FASTag number, vehicle details, issue description, etc.
5. Upload any supporting documents or evidence if required.
6. Provide your contact information so the FASTag team can get in touch with you regarding the status of your complaint.
7. Submit the complaint form.
The FASTag customer care team will review your complaint and provide a resolution within the stipulated turnaround time, which is typically 7-10 business days. You can also follow up on the status of your complaint through the Grievance Redressal portal on the website.
Let me know if you need any clarification or have additional questions!