Theft from car

I took my car to Toyota Culemborg for a service. Received the dreaded call to say there are things wrong with car, as one has come to expect. then received a call at 14h00 to say my car is ready and I can collect it. I told the person I finish work at 16h30 and would be the re by 17h00. I was then told they close at 16h00 . How is any working person meant to get there before 16h00, and worse not to be told when bringing your car in for the service. Your website says under hours, service center closes at 17h30. Then when driving your car back to work you discover all your parking money coins in your ashtray and your chewing gum has been stolen... Now I know its only chewing gum and R30 in small change, but its my small change... and I should not have to even remove chewing gum from my car... This is completely unacceptable.... Yes you got a sign saying remove your valuables, but REALLY , do your staff really have to steal ....... Its so not acceptable..... Wont be taking my car back to your Toyota again....