The plugin has more than half a million downloads. The design is correct. It has a free version and where it is interesting is in the functions of agents, schedules and multiple telephones.

There are many one-person or few-employee local businesses that deal directly with orders and information.

Specifically I have been looking for similar plugins these days. And this is the best. Tier1 is very generous and Tier2 a good investment.

Only made less available beyond WP.