Hiring a professional voice actor can be much cheaper than you think, if you use the service Fiverr. A quick search for "voicemail" found dozens of actors who will professionally record your script for anywhere from $10 to $50 or more.
Lecia has provided thousands of voicemail greetings, auto attendant messages, On-HOLD Messages, and IVR Voice Prompts recordings for small business owners and large corporations worldwide. Your voicemail greetings and messages can be recorded in most any format that is compatible with your phone system, such as .wav or mp3 files.

The simple truth is that you need to be more aware of what you’re leaving for other people to hear. Sure, this doesn’t always register as a priority for users, but it’s never too late to reassess your greeting. a. Reading/Speaking in the Imperfect Tone: Tone is absolutely everything. Users don’t want to come off as being too nice, as it sounds insincere, or being too terse, as it can be interpreted as being rude. That being said, striking the right balance is absolutely essential. Your greeting exists as its own entity, and therefore, it should NOT rely on callers’ familiarity with you. Instead, it needs to appeal to the masses. As such, your inflection, i.e. the way you state your name and directions, needs to be both welcoming and firm. b. Injecting Humor & Insincerity: While humor/light heartedness can be welcoming, it can also convey a sense of informality, insincerity, and ultimately unprofessionalism. Why, because you’re not there to lend your humor or to contextualize. Instead, you’re assuming the caller has a working knowledge of your personality to ground the message. Though this might not sound like it’s all that terrible—it can be detrimental. As stated above, one should NEVER rely on a caller’s familiarity with you. Instead, aim to appeal to the masses. Humor is ultimately subjective, meaning not everyone has the same tastes; therefore, someone is bound to be turned off by a quirky or off-color remark. While implementing a light-hearted or even tongue and cheek tone can work, it’s just a really bad idea.
The biggest barrier is actually getting them to leave the voicemail in the first place. Don’t get in your own way by recording a long, drawn-out voicemail greeting that might do more to convince them to hang up than actually leave a message.