OVER-BOOKING

I made a booking for the 25th May to the 28th May 2023 but instead of informing me that there are no availability they change the date to the 24th to the 26th of May without informing me. At the end of the day I had to cancel all my plans and all they can tell me is that they are booked for that dates. My problem is the fact that i was not told that they are fully booked so its about quantity and not quality anymore.