I booked a parking space via the internet and paid for it in full. On arrival at the barrier my registration number was automatically read and I was issued with a ticket. On exiting the car park 12 days later I was told I owed about £280! This was subsequently reduced to £26 which had to be paid before I could leave. It seems that by mistake, I had entered the mid stay car park instead of the long stay. Whilst I accept this was my error, If your computers can read a number plate and issue a ticket, why could they have not informed me that I was at the wrong car park? This would have saved time, trouble, embarrassment and money on my part and a good booking system on your part.