This will help change the greetings’ language from Spanish to English. In addition, you could try changing the language from the voicemail tab. This voicemail tab can be accessed through the Verizon website and you don’t have to use the voicemail system. 6 Ways To Fix Verizon Voicemail Unavailable: Could Not Authorize Access Can’t Connect To Visual Voicemail Verizon: 4 Ways To Fix Verizon Voicemail Keeps Calling Me Verizon: How To Tell If You Left A Voicemail? How To Recover Deleted Voicemail On Verizon? Are 5G Towers “Blight” or “Progress”?How Fast Is My Internet?How Fast Are Satellite Internet Speeds?Will 5G Replace Cable? (5G vs DOCSIS 3.1)Compare 2.4 GHz vs. 5 GHz WiFiInternet Service Providers (ISPs) in the United States4G vs 5G (Difference Between 4G and 5G)What is Satellite Internet and How Does It WorkHow VPN Encryption Works? (Answered)
As with most technology and applications, experiencing glitches at times is normal. We may not be able to pinpoint the cause of why you are not able to delete your voicemail messages, but here are three things you could try via your Android phone to solve the problem:

3. Call your voicemail. Using the dial pad, type in the phone number assigned to your voicemail account, and then press the green Call button. Or, just press and hold the 1 key if that's easier.
“Hello! You’ve reached the voicemail of [your name], [your job title]. I’m currently either away from my desk or on the other line. Please leave your name, telephone number, and a short message after the beep, and I’ll be sure to get back to you as soon as I’m available.” Press and hold the 1 key to access the voicemail system. When you hear the recorded message, press the # key to bring you to the system menu. Press 4, for the Personal Options followed by 2 for Personal Greeting. Follow the prompts to record, listen to, re-record and save your greeting. How do I change my voicemail number on Samsung Galaxy s8? Find “Voicemail number” Press Phone. Press the menu icon. Press Settings. Press Voicemail settings. Press Voicemail number. Save voicemail number. Key in +61414121121 and press OK. +61414121121. Return to the home screen. Press the Home key to return to the home screen. Dial voicemail: Press and then hold on the envelope icon displayed on the main screen. Enter Your Accounts Password: Enter the password if prompted. Delete voicemail: Tap 7 on any voicemail and it will be deleted successfully. Open the dial pad on the device. Open the application drawer and scroll through to find the Phone app. Dial Voicemail. Tapping the number 1 and then hitting the green phone icon at the bottom should call Voicemail. Enter a password (if there is one). Skip through messages. Delete a voicemail. Log into Google Voice. Click on the gear icon. Select “Settings” from the menu options. Click the “Voicemail & Text” button. Click “Record New Greeting” in the Voicemail Greeting section. Enter the name for the greeting you are going to record. Select forwarding phones. Click “Connect.”