Dozens of Instacart customers are furious after a network outage left them waiting all night for food deliveries that never arrived.

Instacart confirmed the outage on Twitter, writing, "

Dozens of people took to social media to complain that the company never directly notified customers of the outage. Several said they were unable to reach Instacart's customer service when their orders failed to arrive. Some said their orders were automatically rescheduled to the middle of the night or the next day.

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On Monday morning, some customers said they still hadn't heard anything from Instacart about the outage or what would happen to their missing deliveries.

The outage also impacted Instacart employees who fill and deliver shoppers' orders.

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