Bad Service for the first time

I made a booking to collect a car on Friday, for 3days, unfortunately I couldn't make it on Friday but I notified them via watssup to cancel the Friday booking to Saturday. Saturday afternoon I went to OR Tambo airport to collect the car and I was assisted by a lady, just don't remember her name but what I can remember is her name tag was written Supervisor, it was my first time meeting her cos normally an assisted by this other friendly Indian guy. The lady was just not interested in helping me, 1st she said they don't have car's, but there were lot of cars outside,the Guys outside they confirmed that, she didn't even check with the depot, 2nd she ask me if I brought my proof of residence & proof employment or 3month bank statement, I said No, I don't walk around with such documents and that is not my first time hiring a car Woodford, pity the guy who knows me was not present. She rudely said, she can't help me, they don't have cars and next time I must bring those documents that's it. I didn't want to make a scene and I left. Very disappointed.