My WORST experience with Booking.com

I booked an accommodation by the name "Chic Home" through Booking.com, with Ref No. ***.On the day of booking I called the owner to confirm my coming. The owner informed me that her place is no longer in use. She told me that she informed Booking.com to remove it from their list, but they haven't done so. She advised me to cancel and that she will waive the "no free cancelation clause" so that I get refunded. Booking.com claims to not have received that waiver. Who is lying here? Unfortunately I am still waiting for my refund!! This was the WORST experience of my life. I was left stranded in Johannesburg and had to make alternative arrangements. Who's responsibility is it to check if the place you're Booking is legit? Booking.com is supposed to do that but failed to do due diligence. All I want is my refund. They are now sending me from pillar to post! This is not what I expected from an international company such as Booking.com. People, think twice next time you think of booking through them. They don't even respond to emails. I tried their X handle but all the same.