Website: https://www.rev.com/blog/best-app-to-transcribe-voicemails-to-text-on-android
A general voicemail greeting is what callers will be greeted with if you are unable to answer the phone at work. It is the everyday greeting, used as the default, unless you have set up a temporary greeting, such as an away message while you're on vacation, or a …

Now, click on the “Settings” or “More Settings” option. Remember that if you don’t have this option, then this method will not work for disabling Voicemail.Scroll and check for the “Call-forwarding” and tap on it.You may be asked to choose from “Voice Call” and “Video Call” forwarding settings. Choose the Voice Call option.Disable call-forwarding and save the settings if your device asks. You have disabled Voicemail now.
Android phones can access voicemail by holding down the 1 key on the dial pad until the phone dials your 10-digit phone number. You will automatically connect to your mailbox and be prompted to enter your temporary password; this password is the last 4 digits of your phone number followed by the # key. Start the Google Voice app. Tap the three horizontal lines at the top left of the screen (sometimes called a hamburger menu), and then tap “Settings.” In the Voicemail section, tap “Voicemail greeting.” Tap “Record a greeting.” How do I access my voicemail? To call your voicemail on an Android phone, simply open your phone’s dial pad and hold your finger down on the “1” key. You can also call your voicemail from a different phone by calling your own number and tapping the pound key. How do you check your voicemail?