Society sharecertificate

I have purchased under construction 2 BHK flat in 2010. At the time of purchase I have kept my father as second owner. Our both names are reflected on Index 2. All the payments are occurred from my bank account. After 2 years (May 2012) from flat purchase my father made a gift registered agreement and transfer flat towards my name. We got flat possession in July 2013 and society was formed in Nov 2014. After society formation I have submitted both Index 2 to society and requested them to make update in there record and give me the Share Certificate accordingly. As per my request society has given me share certificate and mention only my name on share certificate. After couple of years when new society body formed they told me share certificate which was given to me by last society comity was wrong. They told me Share certificate must contained flat owners which was mention in first index2 document. Please advise me what should I do .....