To disable voicemail on a ZTE phone, you will need to contact your service provider or follow these steps:
# Go to the phone app
# Tap on the three dots in the top right corner and select "Settings"
# Select "Voicemail"
# Disable the "Voicemail" toggle switch or follow the steps provided to disable voicemail for your specific service provider. Note that disabling voicemail may cause calls to go directly to a busy signal or be forwarded to another number, depending on your service provider's policies.[br]
This is what I found, I hope you can get that fixed soon