Mumbai: Households in Mumbai are finding it increasingly difficult to book LPG cylinders — both online and by phone registration. They get instead repeated reminders to link Aadhaar cards to respective bank accounts. Sharda Lakhani, 63, who lives alone in her Malad house, has been trying to book a gas cylinder for the last 10 days. “A telephone operator merely reads the automated booking reference number but no one turns up with the cylinder the next day, or the day after that,” she said.