Your concerns about the poor maintenance of Groma Marg, Sector - 19D, Vashi, are valid. The unclean roads, lack of garbage collection, haphazard parking, and inadequate infrastructure need urgent attention. You can escalate this to Navi Mumbai Municipal Corporation (NMMC) via their helpline at +919769894944 or register a complaint on their website www.nmmc.gov.in. Additionally, raising the issue with your local corporator may help push for faster action.