Company is not doing my FNF even several communication

Sir I was resigned on 12 Aug 2018 with the notice period of 30 days as per company policy. But company requested to stay for 2 month till someone has come to my place , which I honour the words and peasfully completed. Suddenly one day prior my emmidiate level informed me that next working day is your last day that was on 26th of NoV 2018. I have competed more than a 2 months of my notice period in basis of my supervisor promise me they will give me one contract with the same profile which I managed for my current company . My HR head promises me in verbal front of CEO that she will complete my FNF in one week .Till last week my company never release my two month sallary nor FNF even after chasing madly with all three supiror ( my emmidiate reporter CTO, CEO and HR head ) through what's app msged and calls and some time i meet in peraon. every time all of three just putting finger on another shoulder . After few days even they are not responding my masges or calls . Very frequently one or two they replay. During this period my HR head was moved on leave for a month and both of the Sr members giving excuses when HR head join we will settled . I am very surprised the company is multinational and just playing a ping pong with me ,stating some one is busy in metting or one of them on leave ect. I have droped multiple mages that I have monthly overhead housing loan, credit card payments car loan and others and I'm the only person who is earning for my house still they are not responding and not doing settlement . I'm going through so much mentel pressure due to financial crises and they are harrsing me . Every bank recovery agent comming to my home for recovery and I put all my wife ornaments mortgage to run the show. I'm the defaulter in every respect due to this company . Last week I seat more than 5 hrs in three consecutive days to meet all superior but no use of it. Last week my only one month of salary release by my CEO . I need a justice . I lost more than a six laks rupees paying intrest to the bank and so much mentel stress which is pulled me in my end of life . Can all respected person pls help me out how to handle this case and withdraw my FNF. Regards