Legal procedure against employer

I Was working With ICICI Bank since 2015 August , but during March 2017 d€ue to some critical health issues I went to my home town for medication , at my home me , mom and dad is there . during my medication bank people contacted me for joining and i sent required medical certificates for that. but during may my health condition was very critical so we were unable to contact them and no one there at home, so I receioved their letter on 15 th of June at that time they terminated my employeement. on July I came to hyderabad and I met my branch person and ERM regarding joining they denied me, as was not having any job and there was a requirement of money , I qualified HDFC life interview , they asked for reliving letter but ICICI bank delayed to issue the letter, after one month they issues it . that time i lost HDFC job as well , later I joined with Karvy , there also same issues they withhold salary for one month so i resigned it. can you suggest me should I file a case against both employers ? ICICI bank didn't gave me medical benefits and no support from them,