Epic uselessness

On the 20th of June 2023 I made a booking via Booking.com for the 23rd of September, which was paid for in full and confirmation received. I then get a call on the 6th of September 2023 and get rudely told that they do not have any accommodation for me and I shouldn’t waste my time coming through!! 11 weeks to figure out the booking schedule??? No refund and I should take it up with booking.com as it’s not their fault So I guess the fault is mine then!!