Unfair Treatment on refund!!!

I booked a room on the 27 October at Waterfall Guesthouse via the agency Agoda. Com and I paid R1800 and my confirmation number is ***. The checking dates were Friday 19 December to 21 December 2025. Fast forward 20 November I canceled the room due to a pressing serious family matter and I was promised a refund once I canceled with Agoda. Com and the guesthouse as well, which I did immediately then and I was asked to give my account number for refund which I gave the Waterfall Guesthouse and I was told they will refund on Monday November 20. Till today no refund was done and as I enquire further I'm told by Agoda that No refund shall be done. I know that room has been booked again to other people because there is big church conference happening for that weekend in that province and accommodation everywhere is fully booked. I canceled a month away and already that place is fully booked so they already have another extra money for that room. We need our money back we can't just forfeit it like that it's unfair and it's a lot of money we can use for our household, in this economy we cannot afford to loose that money.