Dual employment

I joined a company on 8th Jan and on 12th Jan i had emailed my resignation to HR stated that I couldn't join with my personal reasons. Then I joined another company on 18th Jan. But the company I was joined on 8th Jan. had put my exit date on 29th Jan. And also they have created my pf number which is linked to my UAN. Now the problem is I am in dual employment with 12 days. Now i am approaching to my last employer to correct the exit date which is 12 Jan but they are denying to do that. Since no contribution is made by the company to my pf. even they do not paid me salary after leaving the company they generated my pf number does it have any impanct on my curremt job.