You can submit a FASTag replacement request by following the steps below: 1. Login to the Kotak FASTag portal - https://fastag.kotak.com 2. Enter User ID - Registered Mobile Number and Password 3. Click On Complaint >> New complaint >> General Complaint >> Complaint >> Damaged/Missing Tag in courier packet received. Mention Reason for replacement. OR Send mail to fastag.support@kotak.com from your registered mail id for replacement of the FASTag. OR You may call our Customer Care Numbers to register the request. Note – Your tag will be replaced within two working days. Your wallet balance will remain the same post replacement, the new tag will be linked to your existing wallet.