Amritsar Municipal Corporation

Last year I was applied for BIRTH CERTIFICATE for my son Prasenjit who born on 13/9/2010 having primary birth certificate (Choukidars copy with local registrars seal and signature). After a month Birth and Death department issued me a letter informing that his entry not available in the register so they are unable to provide a birth certificate. I have contacted to dept for several times the office person advice to apply for 2008 to 2012 period, however this possible for the malfunctioning of this department, can i receive the birth certificate with any proper and legal way.