NIOS — Not change Father name

Father Name Correction
Sir/Mam,

I have completed my class 10th in 2009 from nios and class 12th in 2014. But unfortunately, at that time I didn't realise that my father name is not correct in my 12th class mark sheet my 12th class roll no. is[protected]. Due to this, I am facing great problems. I also visited my regional centre NIOS and H.O Noida and got to know that candidate needs to apply for such correction within 3 years of completion of the course. But I missed that tenure, I have also provided a written request with all relevant proofs in order to get my request considered by a higher authority, but no luck so far.Sir/Mam I just wanted to know if there is any process by which I can get my father name corrected in my mark sheets that will be really helpful and solve so many problems in my life. Please help me in getting my father name rectified.
Your revert will be awaited.

Regards

pawan kumar