I had a very poor experience with my pre-pay long stay booking. After booking online and pre-paying with no problems, upon arrival at the entry my booking was not recognised. Assistance was provided and I was assured that the ticket I received at entry would reflect my pre-paid details. Upon coming to exit the car park using my 'pre-paid' ticket I was instructed to return to the paystation and to pay the full 39 pound fee to exit. Due to the time (2140) no assistance was available. I have now been charged both my pre-pay and exit charge - almost £75 for less than 48 hrs parking. I have reported this to customer services but was requested to provide both my card details and receipt issued for the second payment to 'prove' my time of exit - no receipt was issued - and I expect a modern system to be able to track when my ticket was validated on exit and the payment taken. As a result I am unlikely to use this facility again nor will I recommend it to my friends. Highly disappointing!