Phone is fastest — dispatch picks up during working hours and books your window on the call. The form works around the clock and gets a callback at the next opening.
Dispatch confirms your town, your machine and your window — then the technician arrives inside it, walks the Loop, and writes the tally. Bring your questions to the sheet; that's where the honest answers live.
If the board is full, you'll hear the first real opening — not an optimistic maybe.