Due to a lack of communication on the part of the tour company, my family and I missed out on the city tour. The tour schedule was altered, but we didn't receive any email notification, so we showed up at the original time. No one was there, we were still billed, and were told we would not be refunded as it was our responsibility to go back to Viator and check for correspondence via the chat section. if we had received an email, it would have prompted us to check the Viator chat section however, we did not receive such an email.