Resort con appartamenti a European Side

“I booked 2 rooms, when I came to the hotel, despite talking to me on WhatsApp in the morning they never mentioned that one room got cancelled, they only mentioned about it when I asked them. Instead of getting a refund, they said the other room can accommodate 4 people, which did not make sense to me, as I booked another room, I paid for it. I asked for a refund for the room, they agreed to it, and on Expedia they declined the request, despite going back and forth, I did not get my refund.”