Be patient Nosha....someone with law experience in these matters will hopefully come on and give you an answer you need, but i would tend to agree with dido, if it was my car.
You say they picked the car up and moved it.........could the owner not be contacted to move it away hence not causing any problem on delivery of the items or maybe dropped off near it, so that it did'nt have to be moved?.
I hope it works out and good luck to you. :0)