National Highways Authority Of India [NHAI] — Rude behaviour of toll staff

I would like to draw your kind attention to extremely rude behaviour of toll plaza situated at Doboka, Dist Hojai, Assam. They do not have proper fastag reader and whenever they failed to get reading due to faulty machine, they claimed that we do not have fastag balance and demand cash payment and their tone of voice is so threatening lead us to very embarrassing situation. Kindly look into the matter and instrucr them to instal automatic fastag reading machine for easy movement