My ex-husband and I were married last 2007 through "kasalang bayan" which is a civil wedding. After our wedding, I started using his last name and I updated all my benefits like pag-ibig,sss,philhealth and bir. I had an idea that our marriage was not valid (I think) because I tried to go to sss and change my civil status but then a representative of sss told me to return our marriage certificate to where we were married and have it registered because there was no registry number on our certificate. And now, we already separated and I requested a CENOMAR from NSO and they really do not have a record of our said marriage. I am starting to use now my maiden name since I was not supposed to use HIS last name since our marriage was not registered in Local Civil Registry. I want to update as well my benefits like change it back to my maiden name and my civil status as "single". Please help. Thank you.