Company Not paying salary as well as full and final

I am working in a Limited Company since July 2011. After working for six years on 30th may 2017 HR person verbally forcefully asked me to resign and asked me to give three months notice and told me that in this notice period I have not to work but to search the job only ,as they didnot require our services.I gave 3 months notice.On the day when I gave 3 months notice I handed over everything to my immediate senior.As instructed by HR Manager i didnot attend the office and only searched the job in 3 months,they sent me the full salary slip of three months. No one contacted me for 3 months ,suddenly after completion of three months they became active and asking me to bring the dues from the client In which my seniors were involved ,(most of them left the Company )with the clean chit but I was not much involved in that matter of dispatches.All the decision of dealing with those clients was decided by my seniors.I send them the emails and call them but they don't reply. Now guide me what to do in this regards I gave notice on 1st of June 2017. Now when I SMS them or mail them requesting for my money they don't respond ,they don't reply Tell me what to do now