Flight significantly delayed (8hrs). Additional parking charge applied despite not exceeding a 24hr period. Tried to resolve through the live chat (can't call anyone) and was cut off. Had I parked from 5am to 5am it would have cost me the same, but I would not have been penalised. I thought I was doing the right thing selecting a period from 5am to 8pm. The 'grace period' of 6hrs you say you offer expired an hour earlier than I left. My advice to anyone parking there will be to select a time period that maximises your stay (i.e. a 24hr period covering a price band) irrespective of how long you are actually staying. A bad decision by your firm to make an already awful situation worse. Compounded by poor customer service afterwards as well.