I will never use this company again after having booked over 12 tours with them. Viator charged me twice for the Santorini Private Sights Tour $328.12 each time. When I originally booked the tour for Sept 30 2024, I accidentally overlooked that the day I placed the booking on July 2 was the default day for the tour I wanted Realizing my mistake I immediately cancelled and rebooked the correct days. My credit card was then charged again two days prior to the actual tour. I called Viator several times and they said that because my original cancellation was inside their 24 hour cancellation policy they would not refund my money even though I had immediately cancelled after my inadvertent transaction. They are scam artists and they kept my money even through the tour operator received nothing for the transaction.