National Highways Authority Of India [NHAI] — Fastag amount deduction 2 times

My vehicle number is gj 23 cc 3599, i was travelling from anand to dahod on 27.03.2021

on 27.03.2021 during passing through vavadi toll plaza my fastag toll is deducted 2 times. So i had called two times to 1033 number but they telling that it is under process.

I am not getting why they are taking too much time to refund the money. It is the question of system failure and they must have to apologise, but still not received any reply.