Back dated promotion

Ne hour. Ask a Question Back-dated promotion Madam/Dear Sir, I work in State Bank of India. I was reinstated in services in Dec 2013. Promotion to scake 3 was due in 2014, all batchmates were promoted. Till 2017 August Bank did not gave me chance as Rural assignment was not completed that too Bank deliberately delayed my rural. I did not gave any consent for non completion if rural. In 2018 I was first time given the opportunity to sit in promotion exam, qualified written but coukd not get into final list and they cited the reason low scores in written exam. I agreed But this time for 2019-20, they are saying that I won't be considered for backdated promotion. I can understand that there are 6 chances for promotion exam,If I couldn't't clear one I would get next and so the promotion should also be effective from 2015 instead of 2014. But as per them I had to clear in the First attempt itself for backdated promotion. This thing was never told to me in writing or any rule. Also Supreme court said to go all consequential benefits with continuity in service. I was not given fair chance for these 4 years and now also they are totally denying it. I shall provide copy of Supreme Court order as well for your reference. Bank did not get my rural assignment completed, I was relieved during my maternity leave to a non rural branch and not given option to sit in promotion exam which makes me loose my seniority,monetary benefits and future promotion chances. Is there any rule as such? I feel injustice being done. CAN I FILE ANY PETITION AT PRESENT? I was scared due to family conditions but now I think it shouldn't have been done.Please guide.