I had a terrible experience with Viator. I booked a private tour for 80 euros, but the provider changed the time and offered me a group tour instead. I agreed, but they never informed me of the price difference, even when I asked. Later, I found out that the group tour costs only 25 euros, meaning I overpaid by 55 euros for a service I did not receive. I requested a partial refund for the difference, which is only fair, but Viator has refused multiple times, even after reviewing my case. This is completely unacceptable and unprofessional. They took my money and refused to acknowledge the issue. I expected better from a company like Viator, but this experience has been disappointing. Be careful when booking with them, as they clearly do not care about fairness or customer satisfaction. I will never use their services again and do not recommend them to anyone.