Hands in the engine. The phone answers itself.
The agent books repair and inspection slots, quotes your prices and calls the customer when the car is ready. Your mechanics keep working, your customers don't wait on hold.
Offers the free slots, books into the calendar and asks for the make, model and what's wrong.
Oil change, MOT, tyres, diagnostics — it answers from your price list.
If the status is in your system, it says so. If not, it notes the question and passes it on.
Phones the customer or sends an SMS and asks when they'll come to pick it up.
The day before. Cancellations come in time and the slot goes to someone else.
A technical question? It transfers the call or sends a summary — it doesn't guess diagnoses.

Customers call before the shop opens. Until now they heard it ring out and called someone else.
A thirty-minute conversation, then the agent calls you as if you were a customer. You pay only when you decide to launch it.