I'm confused as written exam and interview were done in just one day in online, is it fake or true

i clicked on a "free NEET coaching" Instagram reel ad and shared my name, phone number, and status as a 12th-pass CBSE student. Two days later, they called me and conducted a 1-hour MCQ test via Google Meet where my camera and microphone were on, but their camera was turned off. Within 18 minutes of submitting my PDF answer sheet, they said I passed and put me into a 7-student group interview on Google Meet with a man claiming to be the director. Two hours later, they messaged saying I was selected, sent a PDF with hostel rules banning phones, and demanded my 10th and 12th marksheets, income certificate, and a ₹5,000 seat-reservation fee. When I refused, they aggressively lowered the demand to ₹1,000 and repeatedly sent a frequently forwarded PhonePe QR code. I realized it was a scam because the centre has no official location or Google ratings; searching Google only brought up a single private link with no reviews, showing just a few photos of students and the interview interviewer. Consequently, I blocked them without sending any money or documents.