Dear Client ,
The stated association is illegal association. Under the apartment act there should be one registered association to maintain and adminster the apartment. After registration with the Registrar of society, the membership should be given and all the record should be maintained such as books of accounts duty audited and record of the resident profile etc., Even though the society is registered , there is clear supreme court of India ruling that no society is entitle to disconnect or suspend common aminities including water supply. If you have not paid maintenance amount the society should issue legal notice and approach to the civil court for recovery. If they took the law in their hands, you are advised to file a police complaint against them and also you can file criminal case.
File a police complaint against the illega unregistered association and your demand is genuine , no body is authorised without the registeration of association and the body of the office bearers must be elected in the election of all the owners of the units or flats.