We rented a car at Belgrade airport. This was by far the WORST experience so far: - They didn't provide all the services contracted online- we booked wifi and the child seat. They managed to find a seat at the end, but we had to take the car without wifi for the same price. - Insurance that we booked was not valid for them, so they made the offer with their own insurance. - And the worst thing is that they tried to SCAM US when we dropped off the car. They wanted to charge a parking fine, while the fault was made one day before we took the car. The guy at their desk refused to contact the parking service and acted rude, saying that we should contact them, it's not their business. When I said I don't have any phone credit left, and we are in a hurry to catch a plane, he said he can't lend me a phone by any means. After recharging at the gas station near by, I contacted the parking service that confirmed that the fault was made on a day before we took the car. After a parking service lady had confirmed that directly to the desk guy (I passed the phone to him), he didn't even apologize. It is so said that services like this have a licence to operate. So, friendly advice, AVOID THIS AGENCY.