I booked a 2 night stay and was told that check in was at 4pm and to get the key from a lockbox. Throughout the day, I had been trying to contact the host with no response (calling & Airbnb messaging). By 6:30pm, the key still wasn't there, so I raised an issue with Airbnb. The host finally responded and gave a number that no one picked up. By then, it was 7:30pm and I had a mandatory event, so I tried to ask for a refund and booked another place. At 9:30pm, the host told me that I could just go to the place and she would help me.
Now, the host is refusing a refund and says "that the apartment was ready, but the guest never checked-in". Airbnb said they can give me an exception and are giving me 25% back.
I've read the Airbnb Guest Refund Policy and I clearly had a Travel Issues (ii) fails to provide the Guest with the reasonable ability to access the Accommodation (e.g. does not provide the keys and/or a security code). So I should get a refund "Up to 24 hours after check-in. If you report a Travel Issue up to 24 hours after check-in, we agree, at our discretion, to either (i) reimburse you the amount paid by you through the Airbnb Platform (“Total Fees”), or (ii) use our reasonable efforts to help you find and book for any unused nights left in your booking another Accommodation which is reasonably comparable to or better than the Accommodation described in your original booking in terms of size, rooms, features and quality."
What can I do in a situation like this?