National Highways Authority Of India [NHAI] — Behaviour of staff towards toll user customer

I am traveling from Trichy to Madurai. While in Boothakudi toll plaza, near Trichy, Viralimalai, on the way to Madurai. There was very rude behaviour by the toll staffs for giving us our bill. They have no respect for customer. As an Indian citizen I am very shocked at this event. We pay our taxes perfectly and even when receiving our paid bill we are getting I'll treated.