Mahagun's customer support is a real test of patience

I'm looking at a 2BHK in Sector 150, around ₹70L. Builder ka track record on construction quality aur resale value 5 saal baad, especially for Godrej ya Mahagun, kaisa hai? Any actual experiences with either of them after possession? Honestly, Mahagun's customer support after booking is a real test of patience.