Getting "lost" in Hert'z + Auckland's confusing and understaffed airport is not fun

I arrived in auckland domestic terminal with 4 large luggages and 2 small ones. I went to hertz in domestic terminal. The staff told me, my booking is in the international terminal. I had to brought all the suitcases walking over 15 minutes because I couldn't take the terminal bus. Once in the international terminal, I went all the way to the car rental pick and found there is nobody in the counter. I asked someone inside the parking lot, apparently I had to go back to inside the international terminal because the counter is in there. (Thanks to the confusing signs I walked back again to the internal terminal counter). There was only 1 staff there and she was nice and polite. Got my keys and walked back to parking lot. After I drove off, there was no one to verify if there was spots or defects in the car but fine with me. Few days later, I went back to return the car, again there was no staff in the parking lot. I was confused because I expected I could check out immediately and someone would check if the car is fine and release my deposit. So I just parked the car, brought the key with me. I walked back to the terminal, and found the counter empty. There was a sign saying "be right back in 15 mins". I waited 15 mins, there was still noone. Luckily there is a key drop. So I dropped my key there. This is the most surreal car rental experience I've ever had. There is nobody who received the car back, I just dropped the key. I hope nobody is going to do anything weird with the car while I dropped of the car.

I booked the car but was not told that I should go to the international terminal counter instead of the domestic counter. That was slightly confusing because I had to walk pretty far to get there. I also blamed Auckkland airport for being very confusing and understaffed for my trouble.