Resignation Not Accepted By Central Govt. Employer-reg

Dear Sir/Madam, I am a central govt. employee in chennai . I applied to a state govt. job in w.b. before joining the central govt job. I gave the interview during probation period with out informing to the employer and got selected in state govt job. I resigned to my central govt job based on my personal reasons but not mentioned any job related matter in my resignation letter. However i have orally conveyed the matter of the new job to the employer. In my appointment order they have mentioned two things are 1.I have to pay one months salary or one months notice period for resignation 2.I have to withdraw any application submitted for any appointment before joining But i did not withdraw the application and attended the interview and got selected in new job. Hence i gave resignation on my personal reasons before twenty days back. But the resignation has not accepted. Now if i join in new job without getting the acceptance of resignation from the previous employer as the new employer did not ask any relieving letter. In this case if i cannot get relieving letter from the previous employer, what are the consequences i have to face from the new employer if they ask relieving letter. Kindly help in this regard Thanking you