If you have been validly adopted after following the requisite legal procedures thereof, I fails to understand as to why the local Municipal Authorities are hesitant to issue you the birth certificate, on the strength of the deed of adoption, by showing the name of your adoptive mother only. Such denial by the Municipal Authorities would amount not only to an arbitrary action but it is illegal also. Adoption is a legallly recognised process and all authorities are bound to take note of the same. Further, the name of Father is not a mandatory requirement in every birth certificates,especially in cases of adoption. You may personally approach the top-most authority of the local Munical Committee and represent your case for due cosideration. If no positive action is taken, you may resort to legal remedies againist them.