I got a job offer from a very good company, but my current company has created some problems related to my my departure. My current company have requested that my notice period be extended for a month, but I have not yet accepted this request.
Wanting to leave on good terms, I have contacted the company that extended a job offer and requested a start date one month later than their stated offer. Their response to this was essentially that they "need confirmation email from your current company HR saying that you will be relieved on the correct date (without extending the notice period) otherwise you will lose the offer".
My current company is taking a long time to respond to this, they are not ready to send an email now, it will take 3-4 weeks. So My doubt here it is, my new company have a right to revoke their offer at any time. How can i convince them to push out my start date?
Because the new offer is very important to me, I don't want the offer to be revoked. How can i handle this situation?