Booking.com Reservation Price Discrepancy

I booked a spot at a Bodrum establishment using Booking.com. Nevertheless, the charge on my card did not match the price shown on the screen. Even with solid evidence in the form of screenshots, they unjustly accused me of attempting to deceive them. The screenshot was captured at 06:50, and the bank transaction was recorded at 06:51. However, they insisted that I could have made the reservation at a later time. I would like a refund to be issued to my card for the difference.