On arrival at the airport there was 1 desk with several people of different "rent a car" companies behind it were all the tourist were lined up.. we stood at the back of the line and waited our turn. When it was our turn it seemed we were in the wrong line as Wiber was working out of the back of a car. In the Netherlands we booked the car WITH full insurnace coverage. However the lady from Wiber said we needed to get either a new insurance for € 124.00 or she need to block € 1000.00 on our credit card. We showed her we had arranged and paid for the insurance but she did not want to know about this. After paying € 124.00 we received a key and had to look for our car. Than she had no time to do a "walk around" the car to look for damages....and there were a lot.... the lady yelled something in spanish and walked away. When we had to return the car, we received an email with a new location (not the airport). When we arrived at this point, there was another car also looking for the Wiber location. There was nothing.. no people, no sign, nog flaggs.. nothing. When ik called the number.. i got a guy on the line telling me it is in the back corner of a parking lot.. without any signs of Wiber. We than had to wait for a transfer to the terminal.. which was not there. When it arrived, it was the same lady we had on arrival at the pick up.. her shift was up so she walked away and we had to wait again for somebody to drive the shuttle. Due this we nearly missed our flight.