Thank you for your post and welcome to our community forums. We're here to help.
I'm sorry to hear that you wish to disable the voicemail feature. So that you're aware, the voicemail is a free feature that's provided. With that in mind, are you still interested in having it removed?
Thank you for reaching back to me so promptly via private message. As we discussed there, your request has now been actioned and is processing.
Let us know if there's anything more that we can assist you with.