The ticket machine in the Medium stay car park was not working, so I searched for another machine in the car park, but when I could not find one I had to go to the office near the exit barriers, by which time I had exceeded the 15 mins free time and was charged £3.60 for my trouble! The woman on duty would not listen to my explanation and just kept repeating that I had exceeded my free time and would have to pay. When I offered her the cash she said she would only take cards, which I did not have, so she then decided that cash was acceptable! She obviously missed the customer care training session.