Pre-Paid Taxi In Delhi Airport — booth person bluffing in cash

I am tourist from pune nd i came at prepaid taxi booth at newly started haj terminal. I want to go to karolbagh nd fare for this journey was 470 i gave 500 rupee note but the person at booth bluffed nd shown me 100 rupee note nd refused to agree that i have given him 500note. Request to check in cctv. My mail is [protected]@gmail.com
Date of journey 28nov17