Resigned with cause.. HR but it was not accepted and demanded resignation letter and i submitted

Point 1: Some of the employees in our company harassed me and they came to my home which was allocated by the company and gave a warning to leave the organization thing informed management and mailed but no action and continued the job. After a couple of weeks Point 2: They are continuously torturing me in the work field when I came to my home town they threw my luggage in the room and allocated to someone else without informing me. when I returned from home town and went into the room, there was someone else...discussed with management,,, and I don't have the option then I submitted the resignation letter by mail which was not accepted in the mail later HR demanded resignation letter and I submitted. I have all the mail proofs I have HDFC ERGO insurance policies for job loss both personal loan and car loan for 3EMI compensation but HDFC insurance rejected and mailed the volunteer resignation. I showed them all the mail communication which I communicated with the management and I submitted the resignation mail because some of the management employees abused me I resigned with the cause but they didn't answer my queries and did not accept the resignation letter and HR demanded the resignation letter and I submitted I would like to speak regarding this because there is so much to say