I applied for British Citizenship under the UKM law as my mother is a British Citizen who moved after her marriage to my father in India in 1976. Prior to that she was in UK. I was born on 2nd June 1979, and like most of us (i am sure) my mother was not aware that she can apply for my citizenship, she did not until last year in October 2018, when I came to know of it an applied under the UKM scheme.
I sent the application to the Home Office in October and got a response from them sometime later to get my Biometric metric enrolment done at the nearest centre in New Delhi, India, which I did successfully.
After a couple of days i received another email stating that I will receive my application soon as they received a decision, and when I did receive the hard copy, they said that I was denied British Citizenship as my mother was a CUKC at the time of my birth and had I been a CUKC then I would have the ROA and probably the right to get British citizenship. But i still fail to understand this as my younger brother who was also born in India, was granted British Citizenship when applied for in India, through the high commission without any issues.
Is there any advice somebody has to share in such a case, as both my mother and brother, have been residing in UK for the past 14 years now, and I am in India for now

What do you all think i ought to do in such a case, as in my application response they also said that if they want it to be reconsidered then I can do so as per the NR form which needs to be filled and sent to the Home Office in Liverpool.
Please, if anyone understand to ease of my confusion....a big thanks in advance....