Circle K

I went to circle k in marysville ca to get my car washed. I inserted $7 worth of quarters. The machine did not even soap my car. I went into the store to inform the staff. I was treated very rudly. I was basically called a liar. They acted like I was trying to scam them when all I wanted was my car washed. The manager went so far as to go to the machine to see if it actually accepted quarters. I am discusted with the customer service. And I am very sick of being treated as if I were a liar or a crimiinal. Your promt attention to this matter would be appreciated.