Southernrailway — parking charges collected from me for taxi pick-up at coimbatore

Address:

641001

Taxi pickup at coimbatore juntion back gate paying parking fee
Hi,

I book ola taxi just came and picked me at the back gate on 24/02/2019 at 19.36 hrs. And the parking person charged me rs.25/- saying the pickup is considered as parking. I don't understand what kind of rule it is and don't know they charge legally or not. Please do the needful.

Thanks,