viator couldn't book the dates I wanted for Halong bay. Payment was pending. Offered alternative dates, which i tried to book but these were rejected. No offer of alternative dates; however they still have my credit card payments for both bookings pending almost a month later. it has pushed my credit card limit to the max and has caused problems with auto payments. I have tried to contact them; it is almost impossible to find a contact number or eamil; when I did find one I have received no response. I will be contacting consumer affairs Australia about this company.