IRB Infrastructure — Related to fastag

I was travelling from Gulbarga to Mumbai on 20/05/2023. My fastag was damaged so there was no physical fastag available. At every toll plaza till pune mumbai expressway i used to tell my vehicle number and my balance from wallet used to get deducted. When i said the same to the IRB Toll Pune Mumbai Expressway Plaza, they said that this wont happen at their toll plaza and i have to pay by cash. I was charged double amount of the toll amount. When in every toll plaza on my way i was charged using my vehicle number, why is it not allowed on expressway. Same fastag, same readers, same system but still not possible. This is actually looting people.