@Kenneth12
Ken, mate they are going to happen, I am afraid this is just part of life. You have to take technology out of their hands
In my working life I installed air conditioners....I was a mechanical services contractor.
I installed the airconditioning units in a retirement village......135 split system units.
I had a call the day before Christmas from one of these residential unit holders that the Air conditioning did not work! I asked if they had checked on all the setting readings on the thermostat and they assured me in an annoyed way they had set everything correctly....the air conditioning did not work! Last thing I needed on Christmas eve was a drive of 50 Kms to sort out an issue....but I did it!
I arrived and as soon as I went to the air conditioning control panel I noticed they had it set on heating instead of cooling.....which in December in Australia just doesn't work!
I pushed the button to cooling and proceeded to write out an invoice. The guy got quite upset...he said, "But you didn't do anything"!
I said "yeah, but I had to drive 50Kms to do nothing, you asured me all the settings were correct, here is your invoice"!
Ken, mate, when you host you are going to have to deal with dickhe*ds in life. Fortunately they don't come along often, just shrug your shoulders mate, and get on with being that great host that you are!
Move on.....next guest please!!!!
Cheers.....Rob