Was asked to resign but I got laid off

Hello Grapevine fam,

I want to share my story and get everyone's suggestions on how to proceed.

I have been working with this startup for more than two years. Recently, my manager and HR head called me for a meeting and said I wasn't living up to their expectations and they wanted me to resign. In the same discussion they said, the company would be paying 2 months salary as severance pay and my LWD would be in June since the notice period here is 2 months and this would help me in my job hunt.

So having faith in this company, I resigned. Right after that my manager and the HR head is not legally acknowledging the two months of my salary as severance pay. And the very same day, they sent me the experience letter which had the same day as my last working day, despite them mentioning my LWD would be in June.

How do I proceed now? I have given my best to the company in the last two years. But things turned out this way, very dejected and disappointed with the startup.