I come with 20 years of HR experience, and following processes always pays off. Stay calm and demonstrate maturity. I do not know the maturity of the company processes and policies you worked for; however, if you have complete confidence in your tenure and exit, then:
1. You should find out if you can get the email contacts for the HR head, Compliance head, Legal head, and Women's networking group head.
2. Write a common letter to all concerned and state your peril.
3. Share as an attachment the resignation letter you sent, the acceptance, the relieving letter, and Full and Final statement if any.
4. What reports/feedback/information do you have? Ask for an investigation and request them to intervene, stating violation of employee rights. Your reputation rights stay even after you leave. It cannot be maligned without a base.
Warm regards,
Seema R