Change In Date Of Birth In Service Book

I passed matriculation in 1982.date of birth entered in original certificate is 10-04-1963.but my father says i was born in 1968.the school made mistakes in school records and hence the error occured.Iwas appointed as a government school teacher in 1994.date of birth in my service book was entered as per my matriculation certificate as 10-04-1963.In 1996 I wrote an application to block education officer with an affidavit to correct my date of birth as 10-04-1968 as he had opened my service book.but no response was taken.In 2004,I wrote another application to district education officer to rectify it but again no response was taken.I have no proof as to my correct date of birth.Both times I applied on the basis of affidavit by my father.After that I lost hope.Is there any way out to rectify my date of birth in service record.