National Highways Authority Of India [NHAI] — Double charges and Unethical Behavior

Today I traveled from Gonda to Lucknow and at Shahab Pur Toll Plaza, Lane 04, the toll booth showed fastag blacklisted despite having sufficient balance.
The behavior of the person at the booth was very rude and kept saying that you have to maintain Rs. 1000 in Paytm wallet for the deduction of Rs. 15(Since it was a return journey).
They took cash for the toll and the money for the toll was also deducted from my Paytm wallet.
2 Cars ahead of me also faced the same issue.
Please refund the extra deduction and check the plaza for whether a scam is taking place.