Booking.com complaint: misrepresentation

I was looking to book a room for 1 night to attend a memorial, as me and my partner have mobility issues we needed one with car parking I found one that stated most popular facilities free parking, I booked a room for one night, when I told my son he knew the pub and said it did not have a car park, I went on to google maps and the pub did not have any car parking at all, I cancelled less than 24 hours later, I have contacted the property who told me not to contact them again or they would report me for harassment, I have contacted booking.com numerous times they offered me £12 credit which I told them I was not accepting, I have asked to speak to a supervisor or manager and each time they say there is no one available and I will get a call back, I have never had a call back on any number they have for me they keep telling me to contact the property and each time I advise them the property have threatened to report me for harassment this has been on going since I booked the room on the 13th November 2021 and cancelled 14th November.
Confirmation number
3458.439.608
PIN
1761