Please dont park your car here when travelling

I left my car at Executive valet parking at or tambo for 7 days. At dropoff i took a photo of my odometer reading. At pickup there was 40km driven on the car. When taking it up with staff, they became aggressive and refused to give me a copy of signed documentation. When i finally got out if there after paying R1500 for the parking, my engine light was on, and the car shaking badly, i barely got home. I took the car to mercedes first thing in the morning and during the valet water got into the engine and damaged cylinders. It will cost me R2000 to repair this. When taking this up with Johan who claims he is manager, owner, director and the only person that will deal with me, frankly he was quite rude and cant even see how damaging this is to a longstanding client of theirs. I have spent thousands with them on parking, i wont make that mistake again