Called to make an appointment for service of our A...

Called to make an appointment for service of our A/C, heating and water heater, no problem there. Three days later had a call to make sure we were OK for their plumber to call to repair our leak. But we don't have a leak, I want our A/C, heater and water heater serviced. OK says the guy, asked a few questions about how old the system is etc. The next morning a plumber arrives, not able to service the A/C, heater and water heater.

What a waste of time, and people, listen to what your customer wants.