Irregularities observed in BSNL junior Engineer online Rectt.

Respected Sir, I gave BSNL online exam for the post Junior Engineer. This computerized based online exam held between 25th Sep - 29th Sep,2016 in total 10 shifts. My Exam date was 25th Sep, Shift 1. The answer key of this Exam published by BSNL on 17th October contains 20-25 wrong answer and they asked candidates to submit queries regarding those answer with references from standard Engineering book. Accordingly I have sent all the proofs regarding those wrong answers. After few days BSNL made some corrections in the answer key and declared final result of qualified candidates. This final answer key has still 10 wrong answers, this causes injustice with the deserving candidates. Even after complaining about this issue to BSNL recruitment branch , they said answer key is in and they will never going to change it. So in short this result is totally based on wrong answer key. I looses by 2 marks in qualified candidates list and please guide me how I can further raise this issue as I have solid proofs of those wrong answers. The said examination was conducted by BSNL all over India. Main Recruitment branch is at Delhi. Your suggestions would be highly appreciated. Regards, Rakesh Jadhav