How long do you wait on a scheduled appointment at your house before you call the guy a no show?

It depends. If it’s an excellent provider who is lacking in customer service ability, I will work wait. If it’s someone who just didn’t bother to call or reschedule, I give them one follow up call from me when they’re fifteen minutes late and/or up to an hour if we have a set time and I don’t have to leave the property. After that, I call or text and tell the provider that their no show was a de facto cancellation and not to bother with the service call.

And if it’s the only appliance guy who services Miele, I’ll wait. Luckily, there are two competitors who service Sub Zero/Wolf so they tend not to keep customers waiting.