Friends and colleagues speak to each using first names only. So do people of authority. They do not call each other and leave voicemail messages asking for Mister, Miss, or Mrs. Therefore, when you call a person you want to do business with and you leave a voicemail message, refer to them by their first name only. Don't say mister, miss, or misses. Don't say their last name. Begin your voicemail message by saying only "hi/hello" followed by the person's first name. Or, you can even forget the "hi/hello" and just say the person's first name. That is how you show confidence and authority and separate yourself from weak salespeople.
In most cases, the phone serves as your main point of contact with other people, and how you answer the phone says a lot about your business. Answering the phone in a professional manner leaves a good impression. If you are unprofessional when answering calls, the result can be losing customers. Here are some tips when answering a business

“Thanks for calling the desk of (insert your name) at (insert your company name). I’m either on a call or away from my desk but if you leave your name, phone number, and the reason for calling, I’ll return your call as soon as possible. Thank You.”
Business voicemail greetings are likely to vary by company. Consider these specifics to create a professional voicemail greeting that works for your needs.