Can I get my experience letter

Hi I was working in a company from where I have recently resigned by serving 15 days without following the 60 days notice period. As I don't wanted to serve the full notice due to some reason. I have written in the resignation that I'll buy out the notice period no matter what would be the amount but my employer doesn't want the me to buy instead he wants me to serve the notice period he mentioned that I have to follow the term mentioned in my agreement which is as follow Separation:Either party to this Agreement may end the services, even without cause, by serving a notice in writing to the other and providing 60 days notice or at the company’s discretion, making payment in lieu there of for the notice period days not served. In case of misconduct/breach of company policies committed by you, the Management reserves its right to terminate your services without notice or payment in lieu thereof. Please help me how should I proceed with so that they will give me my reliving letter, experience letter and other imp documents