Need your consultation to buy new house

Hi, My name is lavdeep Sharma. I planning to buy a house in grater Noida. I already identified property. it is builder floor freehold property ( Under Construction) I am sharing property details below Builder Name Vihaan Galaxy Property ads on 99 Acres: https://www.99acres.com/2-bhk-bedroom-builder-floor-for-sale-in-vihaan-galaxy-ecotech-3-greater-noida-1011-sq-ft-spid-B51063666?pos=LAD 1. I doubt builder and property because I researched on the internet could not much relevant in information about the builder 2.When I ask about documents like Land Records, Layout Approvals, Master Plan Etc. but give me only land documents and said for residential land not required other documents or permission to build the builder floor. If required I can send you land documents with you. 3. He also told me that for freehold property national banks not approve home loans need confirmation it is correct ??? 4. I already made payment of booking amount they asked me to transfer the amount name of USB Constructions And Developers whereas as project name Vihaan Galaxy. They also give me payment receipt Name Vihaan Galaxy I found this very weird These are few points made me worried need your assistant please help If you need any other information about please let me know Thanks