WASHINGTON — The Supreme Court on Monday ruled that dissatisfied customers of DirecTV in California could not band together in a class action and must instead pursue individual arbitrations.

The decision, by a 6-to-3 vote, was the latest in a series of Supreme Court decisions that have made it harder for consumers to go to court to pursue claims of fraud and defective products.

Citing a New York Times article on the phenomenon, Justice Ruth Bader Ginsburg wrote in dissent that “these decisions have predictably resulted in the deprivation of consumers’ rights to seek redress for losses, and, turning the coin, they have insulated powerful economic interests from liability for violations of consumer protection laws.”

The new case, DirecTV v. Imburgia, No. 14-462, arose from a 2008 lawsuit brought by two customers who objected to the company’s early termination fees and sought to represent a class of people in the same situation. After the Supreme Court in 2011 allowed companies to use their contracts to forbid class actions and other mass adjudications, DirecTV asked a state court judge in California to dismiss the lawsuit and require arbitration.