Municipal Corporation Of Greater Mumbai — Wrong name in birth certificate

Address:	Mumbai City, Maharashtra, 400059
Website:	www.mcgm.gov.in

My name is paresh aher, i was born at home so municipal corporation of greater mumbai gave only two birth certificate in which my name was paresh aher, now my mother submitted one in school to admit in school(as per government law school take one birth certificate while admitting so that name should not be changed or different till full education ) and second one get lost in flood after so many year i submitted application to municipal corporation of greater mumbai to have new birth certificate they gave certificate with name prashant aher, when i told them that its a mistake they start yelled at me, i shown them my school result from junior kg to hsc everywhere its paresh aher but they are not accepting it, now how its possible if i had changed my name than it should have matched with any of these application
i request to understand my problem and change my name to original as it was ago