Agoda FORMAL COMPLAINT- CANCELLED Fully Paid BOOKING STATING ERROR

I made a fully paid and confirmed booking through Agoda for a Deluxe Twin Room at GHL Hotel Barranquilla for 5 February to 8 February 2027, under the name Jason Mathias. The total amount I paid was 524.30 AUD, and I received full confirmation of my reservation. A few days later, I received an email from Agoda stating that my booking had been cancelled and that a full refund would be issued. First the reason was given as the hotel cancelling the reservation, and then it was described as an Agoda error. After this, Agoda offered me a full refund plus 50% extra. However, I do not want to cancel this trip because I have already booked and arranged my flights based on this hotel reservation. The same room at the same hotel for the same dates is now being sold for around 1,768 AUD, which is more than three times what I originally paid. Because the cancellation was not my fault and was either caused by the hotel or by Agoda’s own system error, I find it unfair that I should now bear this huge price increase. I request that Agoda either reinstate my original booking at the confirmed price of 524.30 AUD or provide an equivalent hotel of similar standard and location for the same dates at no additional cost to me. I ask for this issue to be resolved as soon as possible so that my travel plans are not further disrupted.