Tech Mahindra — Spot resignation

Address:

tech mahindra, electronic city, phase 2, bangalore

As i am facing health issues and recently there was emergency due to my health and due to that i want to spot resign from the company but my manager told to serve the service period for 3 months, my doctor has suggested me for operation and has to be done by 5th of June. I have to resign the company before 5th please help me with the process and i don't want to serve the service period for 3months. And if possible i want experience certificate till the time i have worked in the company.