Broken springs and cables
The door won't open, or came down hard. The customer needs help today and may be tempted to try it themselves.
On the site: The number first, and a short plain warning: springs are under tension, don't try to release them, call.
Doors off track and damaged panels
A door hit by a car or jammed half open. Urgent if it won't close and the house is open.
On the site: A route for urgent repairs, and a form that takes a photo for the ones that can wait.
Openers
A dead opener, a noisy one, or an upgrade to a quieter or smart model. Customers often know the brand on the motor.
On the site: The opener brands you service and install, named, so a search for the brand finds you.
New doors
A considered purchase: style, insulation, windows, and where you are, wind-load requirements for the area.
On the site: Your own photos of installed doors, the styles you offer, and a quote form that asks for the opening's size.