The car arrived on time at the pickup point. However, one staff member was careless and didn’t ask for any registration; just told me to take the car. The fuel tank was only one-third full, and the staff member said it was fine to return it the same way. Later, I felt something was wrong, so I used WeChat to contact a colleague at the car rental company whom I’d spoken to before. He told me to go back and re-register all the documents, but by then I'd already left Jeju City and had to drive an extra 50 kilometers.