Mental harassment by manager

Dear Sir, I am the team leader at Vsynergize. I joined the company in 2019, when I was a representative. I received a letter stating that I had 30 days notice period to the company. After one year, I was elevated to team leader. And now I have put now my papers from this organization that I am currently employed in (Vsynergize) since I had a better opportunity in another company. I was required to wait 90 days while the polices where changed by the company's HR and DGM. I never have acknowledged for the new rules and policies because I wasn't aware of them . HR has emailed me terms of employment appeared on my personal email ID. That I never use for official work and that email was created by a system, and I never have given response on that . it was Just a PDF attachment . I must now join the other organization by November 8; HR and management are pressuring me and threatening , that will mark you absconding which will delay my verification. I need assistance. Please advise what should be done.