Sebel Hotels in Merrijig

Upon checking out, the staff charged the cost price room rate to *******, where Trip.com sourced this booking from, to my credit card on file despite that I have made full payment for 2 nights. Accor is the operator for this property and seems like they are rather unprofessional. Instead of cancelling the transaction, they did a refund that obviously will cost me exchange rates differences. I had to spend time on my holiday to reach out to Trip.com, my credit card bank and go back to the property after my day trip to confirmed that the reception at this chalet made a mistake to charge the amount to my credit card instead of the credit card for *******. In the end, despite doing a refund, I incurred about SGD$18 losses due to exchange rates and both the property operator, Accor and Trip.com is not resolving this issue. Prepay at your own risk. I was charged SGD$1,040 for this and Accor was charging AUD$994.90 to ******* for 2 nights stay. It is about $110 profit for Trip.com and/or ******* and issue is not resolved.