Sunoco

I bought gas at this station on 7/9/10. When I clicked the button "yes" to get a receipt I apparently purchased a car wash, which I couldn't tell due to the glare on the screen. I don't regularly visit that area and just feel scammed by this practice. Multiple attempts to contact this station in the last 24 hrs have been unsuccessful. Attempts to get info about dealing with this problem from 3 other sunoco stations in the area at least resulted in answered calls, but no help on solving the problem or reaching some district service office for help. This is very poor service.