False "Missed Call" every 30 minutes

[MaryOO]

We moved to Full Fibre in October, but in the last couple of days our home phone registers a Missed Call every 30 minutes, at 11 minutes past every hour and half hour. The phone does not ring  and no-one is calling us, details say number WITHHELD but we have to delete all these 48 non-calls from the phone's call list every day, or the memory fills up. 

Our home phone is a BT Aura, connected to a new TalkTalk router. 

Please can you tell me what to do to get rid of this nuisance?

[Gliwmaeden2]

Complete your community forum profile details for Talktalk staff to identify your account, @MaryOO, and they will then magic away the issue tomorrow when they pick up your thread. 

Go via your avatar; settings; drop down menu. Add the Talktalk phone number in Personal Information. Scroll down to find the button to SAVE CHANGES.