National Institute Of Open Schooling — Rejected my admission and not paying fees back

Address:

Virar, Palghar, Maharashtra.

Hi, my name is Krishna Kamble, my email ID is krishna.[protected]@gmail.com. I applied for admission for my wife in November 2019. The reference number is N[protected].
Before taking the admission, I had consulted someone on the NIOS helpline number, i.e.,[protected]. My wife didn't have a 9th passing certificate; therefore, I was instructed to submit a letter stating that she can read and write and on that pretext she could get an admission in SSC. I followed the instructions; however, my admission was rejected stating that I had selected her last qualification as 8th pass. Now they are refusing to give me my fees money back stating that once an admission gets rejected the fees are not refundable. Also, to retake the admission, I have to pay the full fees plus additional Rs 750.
I need help. Please assist me.
Thanks,
Krishna Kamble.