Garage door problems are immediate. Door's stuck open and your car can't get to work. Door's stuck closed and your car is trapped. Spring snapped and the door won't budge. Customers don't shop — they book whoever picks up first and quotes a same-day visit.
Most garage door companies are 1-3 trucks operating in a 30-mile radius. The dispatcher is also the parts orderer and the bookkeeper. Calls during dispatch peaks (mornings, after-school pickup time) go to voicemail and the homeowner books with the next company on Google.
A $400-600 a month answering service won't fix this — they take messages, they don't book, and they have no idea whether your shop has a same-day slot. By the time you call back the homeowner has another tech onsite.
OnCall picks up in two rings and qualifies the issue (broken spring, opener malfunction, off-track door, full installation), captures the door size (single, double, custom), brand if known, and books a same-day or next-day slot from your live calendar. It texts the technician the work order with the door specs before he leaves the shop. See pricing — most pilots run $60-100 a month in usage.