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The caller repeatedly greets with just 'hello' and often rings late at night.
Late-night calls from unknown numbers often signal potential harassment or automated attempts to engage you. In the quiet hours of evening, when these persistent 'hello' repetitions start, it's best to avoid answering altogether—let it go to voicemail to check for legitimacy. Block the number immediately through your phone settings to prevent further disturbances, and report it to your carrier if it continues. Enable do-not-disturb modes during sleep times, and consider apps that filter spam calls for added peace. If it escalates, document details and contact local authorities for advice on unwanted communications.
The caller repeatedly greets with just 'hello' and often rings late at night.