The Better Business Bureau gives Vanguard a B rating. BBB ratings range from A+ to F, and this rating reflects the bureau's opinion of how well Vanguard interacts with its customers.  The BBB also considers several other factors when evaluating businesses. These include type of business, time in business, customer complaint history, advertising issues, and licensing and government actions. But ratings don't guarantee a company's reliability or performance. Vanguard has closed more than 300 complaints in the last three years and more than 200 complaints in the last 12 months. Its BBB profile shows that it currently has two unresolved complaints.