I parked my car at LowCostParking, and waited 45 minutes for the car park bus, due to this frustrating time I unfortunately missed my 16.20pm flight to Belfast International on Friday 2nd June. I then had to wait 4 hours for the next available flight to Belfast and spend £135.26. I was very disappointed in this car park as I have travelled numerous times out of Glasgow airport and never had any bother with the range of car parks connected with Glasgow. This however was my first time flying from Edinburgh and I was very upset and angry that I missed my flight due to only 1 bus running and a 45 minute wait. Within the confirmation email from the car park it stated there would be a bus running every 20 minutes with a 6 minute travel time. £135.26 spent because the car park didn't fulfil their 20 minute promise. Very disappointed and upset with the experience and wish to express my concerns to the car park themselves.