A friend of mine finds a charge of $395 on a credit card of hers to "American Automotive Wentzville". Last month, she got a phone call from a person selling auto warranties and may have been talked into buying one. She'd like to cancel the purchase. However, the phone numbers I find on the web for the "American Automotive Warranty" and "American Automotive Service" in Wentzville MO don't work. The credit card company says she can't dispute the charge unless she contacts the merchant. Has she become the victim of a scam?