I had the receptionist on for about a week, and there was a lot of hang ups, no messages etc.
I now have it only when we dont pick up, and when we are not on shift. But I programed it as a voicemail system.
This way even though it is Ai, people know to leave a quick message, and the system notifies us. We make sure to call back no later than 60 min.
Second thing... if you can afford it, hire someone to answer phones, and emails. It will be the best money you ever spend, and totally freeing you from the office tasks.
Of course teach them on jobber etc... this will free so much time for you.
