When Rogelio Villarreal bought rose-gold earrings for a price that the luxury retailer said was a mistake, he looked to a Mexican consumer protection law. He later said the company delivered the earrings.

When Rogelio Villarreal bought rose-gold earrings for a price that the luxury retailer said was a mistake, he looked to a Mexican consumer protection law. He later said the company delivered the earrings.