Terrible. Im out £1500. Booked in January, paid by credit card, paid credit card in full. Changed booking in July, reduced rental to a £400 car. Were emailed confirmation of change and that initial payment of £1500 would be refunded, and they took the new booking value of £400. No refund came through though. Have spoken with several members of the customer service, were told refund would be 10 days, then 28 days, then that no refund was due as it was a 'pre-payment'. Their own customer service team dont know the difference between a pre-payment (take funds) and a pre-auth (reserve funds). They have denied my credit card company the refund, so Ive lost £1500. Will never use them again, and will actively encourage anyone I meet to avoid using them.