I had sent a request to the zonal office @ Chennai 2 months ago and no reply is given. But I know from the internet that there is a clause in the revision notification read as
Provided further that the officers whose resignations had been accepted or whose services had been terminated under rule 39 of Life Insurance Corporation of India (Staff) Rules, 1960 during the period from the 1st August, 2012 to the date of publication of this notification in the Official Gazette, shall not be eligible for the arrears on account of revision.
Also I knew that a number of other people suffer from the same issue of repudiation of salary arrears from LIC. Please go through the links
https://uberrimafideslicindia.blogspot.in/search?updated-min=2016-01-01T00:00:00-08:00&updated-max=2017-01-01T00:00:00-08:00&max-results=6