if you want to leave the company they will almost force you to not leave the company and work for them with very low salary , for example they will tell you will get zt (zero tolerance) if you resign , means you will not be getting experience letter from the company and also you will not be getting the entire salary from 1 st till working day ,in my case i served 26 days notice period and due to some health issue i was absent for only 5 days due to that they are not giving me my salary and nor experience letter ,