National Highways Authority Of India [NHAI] — Toll charge extra

Address:

683, Gujrat Lane, Chandwad

My vehicle number is MH15 FT2709 which nasik district passing and register on pimplagaon toll plaza for local fast tag. But today for vehicle toll charge for one side is rs190 usually that cut rs 40 For one side. And for return it will charge rs 20. But for return today 190 rs cut.
I want to request authority to take action please refund my amount 380-60= 320/- as early as possible. Thank you