Welcome to our community and thanks for posting, we can certainly remove the voicemail service from your account for you. The last thing we want is for you to miss important call fro the hospital due to this service.
So I can go ahead and arrange for this to be removed I will pop you over a private message to take your account details.
Sorry to hear that you're having issues with your voicemail feature. I can take a further look into your account but would need to do this by private message, so that we can clear account security and confirm your details.
I will drop the private message over in a moment, so that we can get voicemail removed for you.