Welcome to the Community, I'm massively sorry to learn about the problems you're experiencing with your voicemail service at the moment.
I've been able to locate your account and can see I'd need to request some action to be taken to get this to be fully investigated. To allow me to do so, could you confirm the requested information in the private message I've sent? You can view that message by clicking the red envelope on the top left of this page.
Sorry again for the inconvenience this is causing, I look forward to hearing from you