Related to birth certificate

Hi! I am 20 years old now. In 2015, after turning 18, I wanted to apply for my passport. Naturally, a computerized printed Birth Certificate is required for the same. But I had the old one, the manual hand-written one. So I applied to get it printed. But the manual one had the wrong surnames of my parents and the same thing happened in the printed one. I again applied for the correction of the surnames and when I got it, it has only my mother's surname corrected on it and not my father's. I applied again for one or two time/s but my father's surname never got corrected, I don't know why. So many months had passed in this process. And one day, a lady known to my mother came to our house and while talking my mother shared all this about the Birth Certificate of mine with her. She told my mother that she knows somebody who can get this thing done easily but with some money. Me and my mother agreed to that as we were tried of getting this thing done for some many months. She asked us to give the photocopy of the birth certificate and also to mark the correction on it. She got this thing done in a week or two and gave us the corrected birth certificate. But the problem was that instead of South DMC, the new one had North DMC. So the zone was changed of my birth certificate. They got it registered from scratch with new registration number and with new hospital instead of the place I was born at. I mean they got a new birth certificate registered from different zone. That lady hadn't told about this before. I then told about all this to my parents but they said it's fine as the problem is solved now. I was quite young so I wasn't bothered much and then I applied for the passport. The new birth certificate was attached with the requisite documents for the passport and I got my passport done. But few weeks ago, I realised that the way I got my birth certificate corrected is not right. The new certificate is wrong and it's illegal also. So I just want to get my original birth certificate corrected and get rid of the new and illegally done certificate. But I think the problem is that I got it attached with the documents of passport, so in records of passport the new and false one is there. But I don't want this. As I mentioned I want to get rid of the new one and get the original one corrected without any further problem. So, I just want to know how can I get this thing done without any problem, as the main concern is that I got the new one get attached with passport. Please help and guide me in this. Thank you in anticipation.