Notice period or Payment in lieu of notice

Dear Sir/ Madam. I need your help on this very urgent issue. On 7th Sep 17, my employer sent me a termination mail saying non-performance as I am a sales person in general insurance broking firm. I was to serve 1 month notice period, but then on 27th Sep, 17 I was called up for meeting where they asked me to stay subject to a bond signing but no mail was sent to that effect. Thus I continued my services. On 30th October I was again asked for meeting where a bond was presented for 3 yrs and with condition of 2 times of my salary in case I leave prior to that. I declined to sign bond clearly stating that it is unilateral and is adverse for my career. Post that we had a healthy discussion on sales pipeline and meeting was over. On 31st October I received a mail again for termination and asked not to come office from tomorrow. Now I was shocked as nothing was said in earlier meeting to such result. Moreover my employer is not reverting my mails for letting me serving notice period or giving payment in lieu of Notice Period which as per me is applicable since they had asked me stay back though not in writing but why else did they let me work, right! I worked even after stipulated 1 month notice period I.e. 8th Oct 17, done mail communication with clients for new business, distributed Diwali gifts and infact these guys also gave silver coin to me after Deepawali. I need help how to make them legally understand that they are diya bound to let me serve 30 days notice period else make payment for not letting me do so along with my Full and Final Settlement. I am seeking your help as I am just a middle class service person and my employer is a business man apart from having this insurance broking firm