I don't have a contract with the company, but now the company is not paying me deposit salary?

I was working as a java developer in a company called endlos technologies. When I started working, the CEO did not authorize us at the time when the company was starting. Then the CEO told me that we still have to make some changes in the contract authorization, then after the changes are made, I will get you to sign the authorization, but in the last month of December. When the company terminated me, I asked the company for my experience letter and my first month's salary, for which they kept the block for security purpose, the company told me that you have broken the rules and violation of the company, that's why we have canceled your salary and experience letter . Do not give letter. 1 -> Now the incident happened that the new employees who came in November asked me whether I want to stay in this company or not and what is our future in this company, I answered them that technical growth in this company. It is a little less, but if the company changes now, then the decision is yours. I gave genuine reviews, but I gave nothing to the CEO to whom I gave reviews. Ajay says this about the company. 2 -> We used to joke while talking in the group that the salary does not increase by working, the work increases. If why am I working overnight, while the gossip was going on, HR heard all these things and told the CEO. Now the CEO is telling me from point 1 and 2 that now you have committed company violations, that's why the company will not give you experience letter ke salary slip. And the company claims that if we file a case against you illegally, you will have to pay 10,0000 to 20,0000.