No response from the company regarding relieving letter and experience certificate.

I join a company from Dec 2019 to Dec 2020. But I got another offer in government as contract. Also I want to leave because there were so many pressure on me, I asked for resignation. My reporting manager accepted but the HR didn't accept my resignation. But I left without serving two months notice period. Now, I got offer from top MNC on campus, and they have strict BGV. So they will know this company through my PF account. Therefore I approached the company to provide the relevant documents and also I will compensate salary in lieu of notice. What shall I do now? Attached the offer letter for reference. 16. Notice period: Either party has to provide 30 days of notice without cause or salary in lieu of notice in case of separation of services during probation period. After confirmation, either party will be required to give (60 days) Two Months’ notice or salary thereof in case you decide to leave our services, subject to the Organization’s discretion. In the event, you have an incomplete assignment; Medi Assist will have the discretion to relieve you only at the end of the notice period. Notice period is linked to the role played by you for the organization.