Firstly approach the harrassment committee if any in the organization you work.
We will need more facts to be able to guide you the type of remedy available. In what ways are you facing mental harassment? Is it defamation, unreasonable pay, not giving maternity benefit, indecent sexual behaviour as each of these have different remedies found under labour laws, anti discrimination laws, criminal law , etc.
Book a phone consultation with a top-rated lawyer on Lawfarm.