After listening to the message you wish to delete, (you can press 33 to fast forward to end), press 7.
If you are having issues with deleting messages, ensure that you take the above steps and then disconnect with the "*" [asterisk key], after you delete the message. You will hear a "Good-bye" message to confirm you have successfully disconnected.
If you still have issues with deleting messages, contact us at 1-866-425-4268.