Landline voicemail issue

[psychofox1]

Hello, there is an issue on my landline phone that I can't seem to fix.

The voicemail tone is stuck and I cannot clear it, even though I have no unheard voicemails. 

I've asked customer service and I was told:

Unplug phone for 5 minutes, then retry.

Try a different handset, then retry.

Has anyone got an answer to why it won't clear? 

Thanks

[Steven_L]

Hey psychofox1,

Welcome to the community and thanks for taking the time to post here on the forums.
I’m sorry to hear of the issues that you’re having with your landline at the moment and that the recommendation from the team hasn't worked to resolve your problem. I would be happy to take a further look into this for you but first I would need to confirm a few details via private message, please look out for my message and we can get started.
Kind Regards,
Steven_L