A PHL Scam?

I went to the Philadelphia International Airport (PHL) last Thursday, 6/23/05, arriving shortly before 7:00 AM. I proceeded to the Economy Parking lot only to find it filled. A security guard said I would have to park in the Garage Parking. I went to the Garage Parking and parked for what turned out to be 8 days. When I went to pay, I was charged the $17.00/day Garage Parking fee for a total of $136.00 rather than the Economy Parking fee of $9.00/day, which would have equated to $72.00 total. Last year when I the same thing happened, I was only charged the Economy Parking fee even though I had to park in the Garage Parking because of the Economy Parking being full. I asked why I wasn't being charged the Economy Parking fee and I was informed that you NOW have to pay the Garage Parking fee even if you're parking there because the Economy Parking is full. WHAT A SCAM THE PHILADELPHIA INTERNATIONAL AIRPORT HAS GOING! Maybe they could just park some "dummy" cars in the Economy Parking and tell everyone that lot is full..........great way to make some money for the airport?