How i will get rid of these problems

I am from west Bengal. I have buyed a ground floor of a Residency. The ground floor was not in plan, later by adding kitchen, bathroom etc it was made. The promotion who made the Residency.sells the ground floor to another promoter. The second promoter was selling it to a unstandard family. So the Residency members said that he can sell it but to a standard family not to illiterate/ unstandard family. My husband and my mother in law buyed this floor. The promoter takes the money and said that he will do the registry i have telled the promoter that I will give some money later and I give that money after a Year. 2 years passed but he had not done the registry. Whenever I tells him about the registry, he said that I will do today, tomorrow tomorrow, today and on and on. But never do registry. This is my first problem. Second problem is when I came to this Residency. Any members had no objection. But now some members have many objections on us. They are telling we are living illegal, we will go to corporation office and many more. But I am giving the maintainence fees monthly and cleared the dues also. We have all receipt that we have given money. So what is the solution of these problems.