Hi again Polly and welcome back to JustAnswer,Thank you for the question and your patience. Should you still need assistance for information purposes only...Initially, have you tried to contact your phone service provider? ...and instruct them to turn OFF your VoiceMail feature? ...i.e. if the Panasonic's Answering System is used/preferred.
No prob and would look forward to an update when able.
Additionally, ensure that all the current messages are heard and deleted from the VoiceMailbox before disabling.
Yes please; do a Ctrl + D to bookmark this page.