****** money in my car

I went to wash my car this morning at Farm yard Polokwane, some employee took cash from my car after I told the admin lady that they must not open where it is not necessary as I have plenty of staff in my car, thier manager was so defensive as if they have done nothing wrong, I wonder how many clients lost thier belongings only to realize late and will not recall where they lost them, they took small note and some coins, it is small money but they don't have the right to take it without my permission, it is theft