Full and Final Settlement

Sir, I was worked for Johnson Lifts Pvt. Ltd. For one year and left the company on August,2017. As per my appointment letter i had to serve 2 months notice period before leaving the organisation. But when i put my resignation i clearly mentioned that i will serve notice period but company did not allowed me to serve notice period and relieved me after 7 days of my resignation. Its been two months but till date i have not recieved any mail regarding my full and final settlement so i called head office and asked them why so late but they told that already the FNF done and the dues settled with notice period as i have not served the notice period. But the fact is that they neither told me nor they mailed me that FNF had done.Even they did not allow me to serve the notice period then why they deducted the amount.I have all the proof, the mail communications. Even the copy of resignation letter where i mentioned that i will serve it. They had not paid the salary and conveyance of July month, other perks that mentioned in CTC.So kindly suggest what should i do now.