National Highways Authority Of India [NHAI] — Complaint about Nathakarai Toll Plaza - TamilNadu

On 20th July 2021 morning nearly 9.30am I was at Nathakarai Toll Plaza Lane.As I had fastag balance low, I gave 100 (50 toll amount, 50 No Fastag fine ).I had attached the proof below. After I crossed the toll, I received message that Rs.50 has been deducted from your Fastag account.I was shocked.For 50 ruppee toll, they charged me 150 which is totally unfair. I had contacted that Toll Plaza Helpline number.They asked me to send the proof in WhatsApp.I've sent it but still no response.Its totally unbearable.I had attached all proofs below for your reference.Kindly refer it and help me with refund of that Rs 100