Chennai Airport — demanding money for wheelchair assistance from elderly

Address:

Chennai International Airport, Chennai, Tamil Nadu

Hello,
My mother in law travelled to chennai from sydney today by airasia flight. I had booked for wheel chair assistance as she was. Travelling. Alone. The assistance from sydney to malaysia and from malaysia was. Excellent. But i am really angry and frustrated with the service provided at chennai airport. The person who was supposed to help my mother in law at the airport demanded money from. Her stating that he doesn't get paid enough. And moreover he has threatened her and taken australian dollars from her when she offered indian currency of 50 rs. That bloody cheat had taken both the indian money and australian dollars of 10 from my mil
This is sick. How could a person take money by threatening elderly people. What is the authority doing? Why should i pay more when i have already booked and paid for the same.
What are you going to do about this. I want stringent action taken against that filthy robber.