I waited in line for 2 hours. This was my most frustrating car rental experience, completely tricked by the London Devila car rental company. I underestimated the speed of the London Underground and the airport express, and even worse, the efficiency of the rental company. There were only 2-3 people ahead of me, but by the time it was my turn, over 2 hours had passed. A man dressed in a suit and tie, looking different from the other staff, attended to me. He told me my reservation had expired, as bookings were only held for 1 hour. I had to make a new rental at a rate of £140, and he said I had no other choice because the original booking was non-refundable and there were no other rental companies nearby. They said they only had expensive automatic cars available. As I had no evidence to prove I arrived within the 1-hour window, I couldn't reinstate my original booking. Left with no choice, I negotiated and rented a car for 2 days at £82. While discussing the issue with the platform, the woman behind me said she had also arrived late and had booked an automatic car online, but she wasn't good at driving manual cars. After completing my paperwork, I saw she had already picked up her car. This indicates that there were indeed other automatic cars available. This rental experience made the reservation meaningless—not only did I not get the car I booked, but I was forced to rent on-site at double the price, feeling like I was being taken advantage of in a bad situation.