Notice to vacate flat within 24 hours to demolish the building

We have purchased a flat in a society and property is registered with paying stamp duty to the concerned authority. House taxes is paid regularly by each owner. It is a society constructed by builders and have not any kind of approved maps of this society as well as the individual flat. All are paying instalments regularly. Flats are constructed from 2013 onwards. Now within a week something happened wrong in view of Monitoring Committee, constituted by Hon SC and noticed is served by MCD building Deptt to vacate flats for demolition. Where flats are under construction , demolished now a day away and MCDoesn't want to withdraw notice. Our RWA has approched the authority but in vain. So pl suggest what we have to do to protect ourselves. Thanks