Landline - handsets show "new message". Why and how to stop?

davidcundy — Tue, 14 Sep 2021 09:52:59 GMT

For many months, if a call is recorded while the answerphone is switched on, or no message is left, each handset shows "1 (or 2) new message(s).

To delete, I have been resetting each handset, which wipes out current date and time on the answerphone, so I have also been resetting time and date.

I have already approached BT for help, but they simply gave me to a telephone number which is costly to use.

Is there any way I can sort this out once and for all?

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