Starbucks sent some customers a 'drunk-texting' push notification late Thursday night — and people aren't happy (SBUX)

Many Starbucks customers got a late-night message from the coffee giant last night — and they aren't too pleased.

Dozens of customers took to social media to complain about a notification for Starbucks Happy Hour — which starts at 3 p.m. — that they say they received late in the evening, long after they wanted to visit the coffee chain.

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"I just got a pop-up notification from the Starbucks app telling me that happy hour is at 3PM today," one person commented on Starbucks' Facebook page. "It's currently 9:30pm. So is the app inviting me to something I already missed 6 hours ago or is it 17 1/2 hours early for tomorrow?"

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@Starbucks your app shouldn... @ Resigned Turtle #emo#

Customers said that they recieved the notification as late as 1 a.m. in a situation one customer compared to "drunk-texting." Business Insider's Hayley Peterson, for example, recieved a text at 12:26 a.m. ET.

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In late March, Starbucks announced plans to bring back its popular Happy Hour deal.

The revamped deal includes beverages beyond Frappuccinos and has a greater emphasis on mobile deals, as customers are notified of updated events and offers via their mobile apps or email. In a statement, the company said that the evolution of the promotion "is part of the company's ongoing strategy to strengthen digitally enabled customer relationships."

That makes it a bigger problem when Starbucks' app malfunctions — as it seems to have done on Thursday night.

Starbucks has long maintained that tech is crucial to its future. While the chain has struggled to increase traffic over the last year, most of its same-store sales growth has been from customers ordering via mobile as part of the Starbucks Rewards program.