My wife called yesterday to have a service on our refrigerator. I haven't received a call yet. If your technician doesn't come in 15 minutes, then cancel the appointment.

The technician is not yet responding to my text. I will have him call you ASAP. There is nothing wrong with your appointment; it is still between 9am to 12pm. Maybe he got stuck on his current job, that took him longer than expected, but I will tell him before 15 minutes, then we'll cancel.