National Highways Authority Of India [NHAI] — mis-treating the customer

I was on the kurnool-hyderabad highway on the pullur toll plaza. I travelled on[protected] and the toll amount was deduced from by fast tag. On the return journey, i was notified on the toll that my fast tag was blacklisted and i was harassed by the ty car poll gate officials into paying double the toll amount for the purpose of letting my car pass. The staff was extremely vulgar and there certainly was an abuse of power.
They didn't even provide me with proper reasons as to why the fast tag was blacklisted but demanded double the amount unreasonably. This situation has put me under grave distress and i would like for you to tell me the exact reason why my fast tag was blacklisted and whether demanding double the amount is reasonable.
Vehicle no. Ts07gc4705.
I would also like to report mr. Ramesh laxman who is the head of that toll for behaving in an utter disgraceful manner including the use of vulgar language and unprofessional conduct. He was incapable of performing his official duties and if appropriate action is not taken against that particular personnel i will be forced to take legal action against the personnel as well as the related authorities.