<ul><li>Facebook's advertising system experienced a bug on Sunday morning, charging marketers extra money for ads that no one saw, according to reports.</li><li>Some advertisers were charged more than double what they agreed to pay, ranging from hundreds to hundreds of thousands of dollars.</li><li>Meta, Facebook's parent company, briefly took part of its ad system offline without much communication to customers, and has promised to follow its "normal refund process."</li><li>The glitch affected ad delivery on Facebook, not Instagram or other Meta properties, and some affected advertisers say they didn't receive a notification about the issue."</li></ul>

Facebook's ad system glitch charges marketers extra money for unseen ads

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