Ogling and Catcalls with an attempt to follow

Description

In Mumbai, in a Harbour line train. It was late afternoon around 4-5pm.
A guy on an incoming train catcalled and ogled at me. I ignored him. I got onto a bogey myself and proceeded with my journey.
On the station i got off at i see that the man is following me. And it was not my imagination, he stared directly at me and even grinned.
I went to the nearest cop (they're always present on every station) and related the whole thing but unluckily the bastard had run away as soon as he saw me going towards the cops.