Sometimes problems happen, Karen was not understanding at all. BMW x5 that she wanted to rent needed to emergency brake changed, even though it does not affect anything, it still gives an error and I did not want for the client to worry. We offered to provide her with ML350 but for her it was 40 minutes too late. If you want to pay 3 times as much, go ahead and pay. We here are trying to help each other, sometimes all we ask is a little understanding and patience.