This is my response to you:
1. You will need to engage a lawyer to appear in the national commission;
2. You must file an application for expedited hearing of the matter;
3. You will need to dismiss that appeal in the national commission stating that the state consumer forum should first get sorted. You can state that vedic realty is solely responsible for not sending a representative in the earlier proceedings;
4. Vedic realty would not state any new argument that would show that the order should be reversed;
5. Therefore vedic realty should be bound by the order and be penalised for the same;
6. Then get an early date in state consumer forum and expedite that proceeding;
7. You will need to search for strong case laws and get the matter disposed of at the earliest since its already been a year and a half;
8. There was this forum website: https://www.indianrealestateforum.com/forum/city-forums/kolkata-real-estate/113539-sanjeeva-orchard-by-vedik-realty-new-town-kolkata
9. If you join your petition then all of the sufferers can put more pressure.