You expect between 6 and 8:45, right? And if it is to give you a quote for lawn treatment, you would expect them before it is dark, right? Because it is 8:50 and pitch dark and I just want to shower and put on my PJs. Assholes.
You've been patient enough. Turn off the lights, lock the doors, and call it a night. You know now that they're not reliable. I hate waiting, so I feel your frustration.