Booking.com canceled our paid booking

We booked and paid 'in full' a R10 600 holiday a month ago, as spots are closing fast. 10 days before our departure, Booking.com canceled our booking because there's something wrong with the place we booked.

Now we are stuck at home during our only holiday this year with no replacement or assistance from booking.com.

And now we need to try and get our money back!