X Ecosystem Green Homes: Layouts vs. reality check?

Builder marketing is pure fiction when it comes to actual space. I work in real estate, but X Ecosystem Green Homes' super area games are ridiculous. They promised spacious layouts, but the usable area feels cramped. My 3 BHK feels like a 2 BHK. Maintenance charges are also way higher than initial estimates. Anyone else feel ripped off after seeing final floor plans? What did you do?