IRB Infrastructure — Toll Charged double though sufficient balance in Fastag account

I was coming back from Pune to Mumbai on 12th July 2021. I am having Fastag on my Car. But I have to pay double Toll (Rs.406/-) by saying that I have insufficient balance in my Fastag account. Whereas I already have sufficient Balance in my account. I complain to my Fastag providers but they said that there is sufficient balance in my Fastag account. I expect refund of Rs.203/-