Your totatlly in wrong side.
If you would have got signature from Magesitrate then your case would have got strong case.
You cannot simply canhge your name and get it changed in Govt documents unless and untill decrred by Civil Court.
If you want to change your name on Govt Iddentity Cards like PAN CARD AND DRVING LICENCES. You must send a notice to the govt under 80 of CPC thereafter you must file Original Suit (O.S.) for change of your name and should give valid reasons that why you wise to change your name.
Unless and untill civil court order to change of your name you cannot change your name from A to B even signature also.
I know lot of people are there to do this task without this, failing affodavit ans geeting change name is very easy for time being, tommrow if anything happens, then Govt will ask for proof or civil court order for chang of your name, but they wont rely on your affidavit and paper publication.
I had very good experance on the same issue.