Overcharged By Hotel From Booking.com, Need Refund

I made a hotel reservation through Booking.com for SoHo & Chelsea, with check-in on 01 June at around 6 o’clock in the evening. When I arrived, the hotel charged me more than the price I had seen and accepted on Booking.com, and I was overcharged by $50 compared to the amount I had expected to pay. I do not have a booking or reservation number to share, but all the details of the stay should be visible in my Booking.com account. I kindly request a clear explanation as to why this $50 overcharge occurred, and how the final amount at the hotel ended up being higher than the price shown at the time of booking. I expect Booking.com and the hotel to review this situation and provide me with a transparent, written explanation of the price difference.