My question involves name change laws in the State of: California

I am an adult male who, in June, filed a petition to have my biological father's last name legally removed (my last name is presently hyphenated), as I have not had any relationship with him and I have not used his name since the age of 8. I have just learned that my petition was denied this past Friday, August 22nd.

When I went to the Court (Los Angeles County) to file the appropriate paperwork, I was informed by the staff that as long as no one objected to my petition I would not have to appear for the hearing and should simply wait for my paperwork to be signed by the Judge. Was I misinformed? I have attempted to research the matter, but find nothing supporting the information I was given regarding the appearance (with the exception of AB-1121).

Also, seeing as the Judge has denied my petition, will I have to start my entire application over (including paying an additional filing fee and publication)? I realize that answers are contingent upon my "failure to appear" being the actual reason for the denial, but any insight into this matter would be greatly appreciated.

Thanks!