You can also go to Settings → Phone → and make sure you see Change Voicemail Password.
In Australian English it’s pronounced with the vowel /a:/ like in ‘part’. Problems arise when people use the /ʌ/ vowel (like in ‘up’) instead of /æ/ or /a:/. If you do this is will sound like the worst swear word in English. Many non-native speakers often pronounce the vowel /æ/ more like /ʌ/ because they don’t have a vowel like /æ/ in their first language. Many speakers of European languages will do this (Spanish speakers and Italian speakers) and also speakers of Japanese and Korean. This problem with /æ/ also means that if you say the word ‘back’ in your voicemail greeting sample, you are likely to pronounce it more like ‘buck’. remember to pronounce word endings in English. Check you aren’t dropping any endings off or mispronouncing them.

Salespeople who call and hang up screen themselves out of the process. No matter if you're prepared to leave the perfect voicemail or not, you need to leave one every time. However, if you do record a few messages with the same ultra-specific question, the prospect feels a twinge of guilt each time you call back because they feel they owe you an answer.
A compelling sales voicemail won't be particularly effective if your prospect has no idea how they should respond. You can't just rattle off what they stand to gain from leveraging your product or service and then hang up. Always offer some next steps or insight on what they should expect next — like another phone call or a follow-up email.