Booking.com Allowed Luxury Central London Flats to Refuse My Booking in Cold Weather

I am writing to formally submit a complaint regarding my recent reservation at Luxury Central London Flats, Best Location in Town (Address: 99 Morning Lane, E9 6ND, UK ). Below are the details of my booking: Confirmation Number: 4830.784.391 PIN Code: 4313 Check-in Date: 17 February Check-out Date: 19 February Prior to my check-in, (I paid ₤140 with my credit card via Booking.com, file uploaded as extention ) and accommodation representative contacted me via WhatsApp and requested that I send my ID number and passport details by taking a photo and sharing it with them. They informed me that access to the property would only be granted if I provided these details via WhatsApp. Me and my sister were 2 minutes far away from the address (apartment) in freezing weather in London. I expressed my willingness to present my passport upon arrival in person, but they refused and insisted that I cancel my reservation. Due to security and privacy concerns, I refused to share such sensitive personal information over WhatsApp. In response,they insisted on canceling my booking. Even I paid already for this property !!! as a result, I was left outside in extremely cold freezing weather in London, with no accommodation, and had no choice but to make a new reservation at a different property. Since Luxury Central London Flats refused to accommodate me, I was forced to book a room at another hotel through Booking.com on the same day at a significantly higher price. I am formally filing a complaint and requesting a full refund for my booking. I paid already but I could not stay in this property because they did not accept me as customer !!!