Rci refuses to change our booking date despite being essential Healthcare workers in a pandemic!

My fiance and I were set to get married on the 9th of January but we now have to cancel everything because no gatherings are allowed as per the presidents speech. Added to that both my fiancé and I are Healthcare workers so we have been called back to work due to this crisis that south africa is facing. The problem is that we have booked part of our honeymoon holiday at Riviera suites in Cape Town through RCI which was booked from the 15th to the 22nd of January 2021. We now have to cancel this as we had to call off the wedding and also return to work but they are refusing to change our booking dates or give us a refund as we have less than 21 days until our booking date. We don't mind rebooking with them.. They can keep the money as long as they able to rebook us but they simply refuse and are unwilling to change anything for us. They are being completely unreasonable considering that we are in the middle of a pandemic.. If their family members were admitted at our hospital would they like us to leave them to die and come on this holiday so that we don't loose out??? This is ridiculous.