Pre-Paid Parking Bad Experience

I booked for pre-paid parking for my holiday from the 6th of August to the 13th of August. When i arrived at the boom gate, it refused to take my credit card. I arrived at 10am in the morning at the Parking -2 Pre-paid area and tried to buzz the control room, where it just rang and rang and rang and rang that nobody even answered. I then instead took a ticket as we couldnt wait for someone to try and assist. This went on for 10min. When we came back from holiday and we tried to get out the parking, the same thing happened it would not accept my credit card to get out. So we buzzed the control room at 1pm and again it just rang and rang and rang and rang.. I then approached the security to call the control room and they said that they are unable too..we basically sat around in the car for 15min waiting for someone to answer the pay station while we blocked the boom gate. This is shocking service, you are exhausted after a flight and yet their is absolutely no one to assist you. We even called the number for the parking and the phone just rang and rang..I will not use this service AGAIN. <br> <br> My reference number was: J1988