Name Change after marriage

Dear All, After marriage due to shortage of legal document and urgency of my pp to be made and submitted in my current firm my agent made my pp as 'unmarried' in 2010 whereas i was married since 2003. Now finaly when i have made my marriage certificate,notary and done with required name change in pancard and adhar card with change of address as well also. i wanted to know what else documents required for surname change in my passport with new address? Will there be any issue when i claim my marriage after 12 yrs? Also wuld like to highlight a glitch in my husbands pp is his first wife's name reflecting whereas they are not divorced yet. Now every new agent is explaining me some new way of getting name changed on my pp which is leading me go crazy. Thank u.