The standard 7 button on the dialer should work to delete voicemail no matter if it was saved previously or not.
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We certainly want you to be able to delete the unwanted messages, SAMMILLSJR. Ann154 is correct. Pressing 7 after listening to the message will erase the voicemail. This link has additional information if you need help with anything else with your voicemail account: http://vz.to/2sxPM1p.
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