National Highways Authority Of India [NHAI] — collection of toll both by cash and from fas tag account

On 24.02.2019 at 07.03 am, toll was collected for Vehicle NO.KA51ML7825 - Rs 60/- both by cash and from Fas Tag account at Paranur toll plaza (Chengalpattu-Chennai). A mail was sent to www.nhai.org on 26.02.2019 requesting to refund the amount collected from Fas Tag account and a reminder was also sent by mail on 28.03.2019. So far neither the amount collected in excess was credited to Fas Tag account nor reasons for not complying with my request have been intimated. I attach copies of my mails for reference and request that the amount collected from Fas Tag account may kindly be credited back to the account in Axis Bank from which it was debited.