Long wait for pick up the car and bad experience for drop off the car

We asked the staff what time they close the office as we might drop off the car when we get back from our trip within the day we rent the car. They told us that they will close at 9 pm, so we tried to get to the office before 9 pm. But when we arrive there around 8.30 pm, they already close the office no one is there. We try to contract them but no one pick up the phone, so we tried to called the main office and I already told them that there is no one in the office but they keep us waiting and call to the office that there is no one. The staff I talk to said we can just leave the car there, but how are we going to get back to the hotel. The staff inform us that we did not tell them that we will drop off the car today so they going home early, but the staff should let me know as well about the closing, that they might closing early if it’s not busy, they only say they close at 9 pm. However, someone from Right2drive came to us and offer us a ride to our hotel, we really thankful to them as it’s really dark to walk from the office to get to the bus stop and if we have to go back to our hotel by bus it will take us to wait for the bus 20min and the bus will 40 min to get to our hotel. In conclusion I’m very disappointed in renting the car with Tripz.