A missed call text only works if the caller believes a real plumber sent it. Generic corporate messages get ignored.
Hi, it is your business name. Sorry I missed you. I am on a job. Reply 1 and I will call you back as soon as my hands are free. Reply STOP to opt out.
Hi, it is your business name. Just missed your call. I am off the tools for the night. Reply 1 and I will ring you first thing. If it is bursting, say emergency. Reply STOP to opt out.
Price and after-hours rates belong in the callback, not the recovery text.
The best missed call SMS for a Sydney plumber is short, honest, and written in your voice. Offer one next step. Separate after-hours from on-the-job.