Horrible Payless Customer Service In Atlanta

I took a pre-paid rental for a Full Size car for a week in Atlanta on September 18, 2015. They did not have a full size car available even though I had already paid in advance for the full size car for the week, Payless gave me a choice of waiting another two hours at the airport to see if a full size car would come available or I could upgrade to a "premium' car for a fee. I didn't want to wait so I stupidly accepted the fee for the upgrade. IT MORE THAN DOUBLED THE COST OF MY RENTAL AND IT WAS THEIR FAULT THEY DIDN'T HAVE THE CAR I ALREADY PAID FOR. Five days into the rental, the 'check engine' light and the 'slip indicator warning' lights came on. I got the car back to where I was staying and called the Atlanta office immediately to get assistance. I called three times between 8PM and 9PM and let the phone ring at least five minutes each time - no answer. I called the 800 number and I was told that I needed to drive the car the 45 miles back to Atlanta Airport since they weren't answering the phone during their posted business hours. When I said that I wasn't comfortable driving a car with serious malfunction indicators showing for 45 miles on strange dark country roads, I was told by the 800 operator that it was my fault for not properly checking the car five days earlier when I took the rental off their property and that any towing charges to get the car back if it broke down was my responsibility. I left the car parked on the sixth and final day of our vacation and stayed at the place where I was renting. On the last day, I drove the car back to Atlanta Airport with both warning lights showing. When I returned the car to the location and explained my dissatisfaction with the fact that they weren't answering the telephone when I needed help, I was told the location manager was not in yet but that she would call me that day to discuss the problems I had. I never got that call at all. Apparently, Payless does not honor the contract when you reserve a specific type car and charges you more than double the promised rate to get you out of the airport, but when you take the car, you are responsible if it breaks down after you leave the lot. Unless you are looking for adventure on your trip, NEVER, NEVER Payless. Your pay more and get less in the end.