The Google Assistant/Duplex may soon be calling local businesses to check for inventory availability. This notification appears on a support page mostly about appointment booking through Duplex: “Google Assistant will only call you when a customer wants to book an appointment or when it needs to check your business hours or the status of in-demand inventory.”

Read more here: https://searchengineland.com/the-google-assistant-may-start-calling-businesses-to-confirm-in-stock-inventory-336344