National Highways Authority Of India [NHAI] — Toll plaza issue - was not allowed to return immediately after passing through the toll on emergency

Dear sir,
I had faced problem at Toll plaza named Nandi Kandi on the way hyderabad to Mumbai. I had travelled to kamkole from hyderabad yesterday (6/11/2021). Kamkole is just 500 meters after Nandi kandi plaza. when crossing nandi kandi toll plaza while going from hyderabad to kamkole toll plaza had deducted toll charges from fastag. once I reached kamkole, I had to return back hyderabad immediately. while returning from kamkole to hyderabad at the same toll plaza (nandi kandi), they were not in a position to deduct the toll charges from my fastag. the reason they said I should not go for return at the same toll plaza within 15 mins from my first cross at toll plaza. the staff at toll plaza did not allow me to office to talk to the manager at toll plaza. I was asked to pay by cash and in case of emergency. when I thought of returning back by paying cash, they charged me double the charge of actual fee without informing me. I have registered this complaint by calling ar 1033 and the complaint nunber is 4607210. please address the below points
1. why should I wait for 15 mins minimum I like to return through the same toll plaza.
2. what happens in case of emergency and need to return the toll plaza immediately and not carrying any cash to pay by cash
3. why the manager was not accessible to address if there is any issue.
4. why was I charged double the money when paying by cash where the problem was with toll plaza people(they could not deduct the money from my fastag)