After booking, builders just ghost you in Noida Ext?

₹70 lakh for a 2BHK is my budget, but builders ka delivery track record dekh ke darr lag raha hai. Fed up of renting, finally taking the plunge in Noida Extension. Gaurs aur Mahagun ke projects dekh raha hoon, but suna hai possession mein bahut delay karte hain. Aur ek baar booking ho gayi toh customer support toh bhool hi jao. Kya ATS ya Godrej ka experience better hai? Post-booking communication kaisi rehti hai? Koi real insights do please.