Mentally retarded man under WEH Metro Station harassing women!

Has anybody encountered this man under WEH metro station making derogatory, sexual remarks along with curse words to women pedestrians?

Yesterday I got so scared as he started following me, saying shameful things and making sexual remarks. People were like kuch nahi karega and all. I have seen him there so many times and he does this to every woman he see.

What can be done about this? Where should we complain? ain’t traffic policemen aware about this situation as they serve right under this metro station as well?