Airbnb not able to help me whilst ****med by their host

I requested a place on the Airbnb app and there was that "pay and confirm" option I clicked it and immediately recieved an automated msg giving me checking in details and I called the host to let him know when I'll be arriving and he told me that his place was already occupied so I told him but his place was available on Airbnb and I had already paid and he ignored me and dropped the call, I called him again asking him to cancel the reservation then so I can get my full refund and he said no I should cancel it on my side, I told him if I cancel on my side I will not get my full refund but he insisted that I should cancel on my side and refused to cancel and dropped the phone call again

I reported this issue on Airbnb and they told me that they can't promise me that they will refund me they will wait for the host's response and hear what he has to say because there was no indication that he had told me that his place is no longer available on the msg thread and told me about a 48 hour policy

This incident happened Saturday 19/02/2022 evening and I only got a response 24/02/2022 Thursday morning after calling Airbnb support repeatedly the msg says that the host says his place was available therefore they cannot help me with my request meaning I will lose my money and Airbnb and the host have gained without rendering me any services and I feel that Airbnb has failed me as a customer because it is not my fault that there was a confirm and pay option when putting in a reservation, I believe they need to take that option out up until a host pre approves a request to protect customers because now alot of people will be ****med easily with this method