SERVICE MATTER OF CENTRAL AUTONOMOUS GOVERMENT ORGANIZATION

I joined autonomous government organization on 16 july 2007. After joining, I got permission for PhD in 2008. The department give me leave for 2008-2009. After that they did not provide leave further. But I completed my PhD in 2012 by taking extraordinary leave in between 2009-2012. In 2009-2012 they even transfer me. So that I suffered a lot in my research. Whenever I applied for NOC for many job applied, they did not provide me NOC. 80 % of the staff never transfer ed but I got more than 6 transfer in tenure of 10 years. Later on mid Oct 2017 I resigned from this organization via email only { heading: resignation. Respected Sir, I am not able to do this job at present station due to various circumstances . This is for your kind information.} and joined a contractual government job in haryana government on next day. From Oct 2017 to jan 2018 I mark my attendance only in this contractual job and got salary from this contractual job. Now I wish to join again in autonomous organization as till the date I did not got any written response about my resignation from my previous employer that is government of india. Is there any issue to rejoin ? If any one file any rti against me that this person did not file written resignation {as I just write in email only} and did job in two places, then what happens ? Is it is safe to rejoin the previous job ? Is there is any chance to lose both jobs ? What is most better option: Please I want to solid and clean advice from a expirenced service matter lawyer.