It has been a serious issue. I a heard lot about the problems faces by residents of Sushant lok. Few days back, residents of Sushant Lok phases 2 and 3, spread across sectors 55, 56 and 57 held a protest outside the developer's (Ansal Buildwell) maintenance agency office at C block in sector 56. The protesters demanded immediate handover of maintenance rights to the Municipal corporation of Gurgaon (MCG) or their respective resident welfare associations(RWAs). You can refer to the link to read the news- http://www.propertyclubindia.com/t/sushant-lok-phase-2-and-3-residents-protest-for-transfer-of-maintenace-rights/699