One of the largest scam and phishing phone call strategies in the U.S. is based entirely on the aftermarket automobile "warranty" business. They charge people incredible amounts of money to cover parts and repairs they'll probably never use over some arbitrary 3 or 5 year timespan. Its A kind of insurance for things that would have cost less than the warranty does, but sticker shock and sudden expense are the scariest. You get the offers through conventional mail marked up as like official government letters as well.