I had an issue paying for my trip due to a miscommunication about what prices were optional and which were mandatory. TourRadar's customer service worked with myself and the tour company to come to a solution, arranging for either a complete refund or a modified agreement. TourRadar's staff called me personally to discuss the issue and worked with the tour company to ensure that there would be no issues with changing the arrangements. Happily, everything worked out and there was no issue in the end. I was very satisfied with the customer service I received, and strongly recommend TourRadar.