Resignation given but told not to come to

Sir, I was working as a consultant,third party role in Karnataka. The company which I had worked had notice period of 60 days. I haven't signed offer letter. I had submitted my resignation on 22nd Sep 2022. I was willing to leave at earliest also but employer side HR or site coordinator who usually does the company coordination called and told me today is your last working day and you should not come to site from tomorrow and my company mail id also will stop working by that day night. I obeyed his words and duly filled the documents sent by company. My reporting Manager from company told me to work on 25 September 2022 and I told that HR and mailed in my relieving nail also that as per client requirement I will be on work on 25 Sep 2022. I left my job and returned to hometown. After some day I called to that HR for service certificate and pending salary. He told me to contact Mumbai head office for that. After calling them they told I will receive documents after 60 days notice period time. On Nov 21 2022, i received a mail stating I have to pay pending due of Rs40300 to company. I was told by Karnataka site HR to not come to site but the Mumbai company HR saying that I had not fulfilled company terms as per offer letter and that Site co ordination person is not owner of that company. What should I do Sir?