What happens to a lead when nobody answers the phone?

One of the reasons I built Virtual Dispatcher was a pretty simple problem: when a customer calls a home-service business and nobody answers, they often just move on to the next company.

I'm curious how other founders and service-business owners handle this today.

Do you use voicemail, an answering service, call forwarding, an in-house receptionist, AI, or something else?

And if you've tried AI for phone calls, what would it need to do well before you'd trust it to speak with your customers?

I'm building Virtual Dispatcher around this problem, so I'd genuinely like to hear how others are handling it.