Good afternoon Miss Katharina, We are deeply sorry that you did not attend the tour. Our policy clearly states that cancellations must be made at least 24 hours in advance, and unfortunately, our reservations department does not operate on Sundays due to our day off. Therefore, the cancellation request submitted on Sunday could not be addressed in time due to these operational limitations. Furthermore, we regret the lack of communication during the meeting scheduled for the tour, since you informed the guide that you were going to make the trip and they were waiting for you for approximately 20 minutes. We strive to provide exceptional service and take our customers' feedback seriously. We sincerely apologize for any misunderstanding.