I have been getting people to come and quote for some work over the past few weeks, not a huge job but still going to cost us over £500 so not a small job either.
One of the people who I arranged to come and quote was meant to come on Friday after I'd finished work, we agreed after 6pm. I didn't check my phone all day and after finishing I saw he had messaged me at 12 to say he was at the house. I rang him after work a few times and had no answer and he did not turn up that evening.
I'm home today and he's just turned up at my door expecting to come and quote for the work, no prior message or call to say to expect him, I've heard nothing from him since Friday's text.
I explained I did not want him to quote for the job as I no longer feel he is reliable and I've had several quotes already which I am happy with. He then erupted into a very loud rant about how unreasonable I was, why did I bother asking him to come and how I have wasted his time! 
How the hell does any rational person come to the conclusion I am unreasonable in this situation, or am I seriously missing something?