Once again, this being the 2nd time in 12 mths I have been unable to raise the barrier after inserting my orange coin to exit the car park. I was greeted with a screen which demanded a silly figure of approx. 813 pounds. The girl on the intercom was impatient but said she would remove the amount shown on the screen - no apologies for what was, clearly, an error by your parking company. The time was approx. 1.30 am on Saturday morning and I had pre-paid for 8 days and, fortunately, had the foresight to approximate my exit time until 2.00 am - even though my flight was due in at 12.05 am - but it was delayed. Why should this happen? Why did your records not follow thru and allow my exit? And ............why should this happen TWICE!! Returning from holiday was, regrettably, spoilt by this incident, once again. I am now going to make alternative arrangements for parking my car at MC/R Airport as I think your service has fallen far short of what is promised by your company. If you can spare the time to check - my Car Reg No is PR59 YBG the date 24th May 2014. Maureen Dignon