Chose 'FastPark' for 8 days parking. First The Bar code would not scan for me to 'Drop off my keys' so a member of staff had to show me how to enter all details into the key machine manually [all of which had been given at the time of booking some months earlier] Same member of staff showed me exactly where my car would be parked on return in the 'DISABLED BAY' (I'm registered disabled and have a 'Blue Windscreen Badge) close be the Key Return boxes. The member of staff also attached the key fob showing it was to be parked in the Disable Bay for my return. On return, the flight was on time and luggage came off swiftly and we got out of the terminal quite quickly, but here was where the real trouble started. The signage took us to areas that were fenced off and we could not get to the Fast Park area. Eventually a member of staff turned up to show us and several others including the flight and cabin crew who had just brought us to Edinburgh Airport how to find our way through the maze of temporary barriers. Finally getting to the 'Key Boxes' scanned our ticket but it took many attempts before a box finally opened and I retrieved the car keys, But the parking bay printed on the keys had been stroked out with a pen and 'Mistake' written on it. So we went out to the Disabled Parking Bay to look for our car which we could not find. Pressed the remote button on the Key fob that puts on the Car Lights, but nothing happened. Presed the remote button on the key fob that opens the boot and puts on the Hazard lights on, but nothing happened. The signal for these two functions on the car has a range of 100 mts so the car had to be some distance away from the Disabled bays where we were standing. My wife then started to walk around the car park (Because there was no staff or any way of contacting any) but she eventually saw a HIVIS jacket and made her way to a gentleman. He did apologise when he read the label attached to the keys and directed my wife to return to the Disable Bay and that he would go looking for the car which he did and brought it back to the proper bay. Loaded our luggage and headed for the exit and came to the first barrier which did not recognise my registration plate and instructed me to take a ticket. At the next barrier, it also did not recognise the registration plate but instructed me to put the ticket in, which I did and it told me I was due £4.00 for overstaying my time [which was wrong as I was still within my departure time]. So I pressed the Intercom button and was asked what my registration number and name were and told I had parked in the wrong car park and that's what the charge was for, But in this case, they would let me off with the charge. Is this the way to treat a pensioner with inoperable spinal cancer?