Auckland Pickup, Hamilton, Waitomo Glowworm Caves, Rotorua, Taupo, Wellington, Returned Car and Took

The Chinese staff at the Auckland city pickup location gave a biased explanation about the full tank, leading to misunderstanding. I didn't know I had to purchase a full tank when picking up the car. I thought I just needed to refill the amount used when returning. I returned the car with more than 80% fuel, but they didn't refund anything. This method is deceptive as the car rental company always benefits since no one uses up the entire tank.