Builder after-sales service is equally important as initial price.

Finally taking the plunge and buying in Noida. Fed up of renting. EMI vs rent math finally makes sense. I'm looking at Gaursons Gaurs Platinum Towers. Initial price looks good, but what about hidden charges at possession? Anyone have experience with Gaurs Group's customer support after booking? Do they even pick up the phone after you've paid the booking amount? What about actual carpet area vs advertised super area? Honestly not sure which builder to trust.